The Brief

Trudging across the top of Bromley Mountain Ski Resort on a sunny afternoon in January, Matt Folts checks his smartwatch and smiles: 14 degrees Fahrenheit. That is very nearly his favorite temperature for making snow. It’s cold enough for water to quickly crystallize, but not so cold that his hourslong shifts on the mountain are miserable.

Folts is the head snowmaker at Bromley, a small ski area on the southern end of Vermont’s Green Mountains. The burly 35-year-old sports a handlebar mustache, an orange safety jacket, and thick winter boots that crunch in the snow as he walks. A blue hammer swings from his belt.

It is nearing the end of the day for skiers, but not for Folts. He’ll work well into the evening preparing the mountain for tomorrow’s crowd. Cutting across the entrances to Sunder and Corkscrew, he heads toward a stubby snow gun used to blanket Blue Ribbon, an experts-only trail named in honor of Bromley’s founder, Fred Pabst Jr. The apparatus stands a few feet high, with three legs and a metal head that’s angled toward the sky. Two lines that resemble fire hoses supply the device with water and compressed air, which it uses to hiss precipitation into the air. As the water droplets fall, they coalesce into snowflakes.

“If it was warmer I’d be a yeti,” says Folts, referring to wetter snow that, if conditions were just a bit balmier, would leave him abominably white. But at these temperatures the powder he’d just made bounced lightly off his sleeve. “That’s perfect.”

Yet perfect fake fluff like Folts’ poses a climate conundrum. On one hand, making snow requires enormous amounts of energy, which creates planet-warming emissions. On the other, a warming planet means that artificial snow is increasingly essential to an industry that, while admittedly a luxury, pumps over $20 billion annually into ski towns nationwide. The good news is that, in the face of these growing threats, resorts have been dramatically improving the efficiency of their snowmaking operations — a move they hope will help them outrun rising temperatures.

American ski areas logged more 65 million visits last season. A sizable chunk of those likely came during Christmas week, when a resort can make — or lose — a third or more of its annual revenue. The Martin Luther King Jr. and Presidents Day weekends are similarly vital. But ensuring that there’s a surface to slide on is an increasingly fickle business.

Snowpack in the Western U.S. has already declined by 23 percent since 1955, and climbing temperatures have pushed the snowline in Lake Tahoe, California — which is home to more than a dozen resorts — from 1,200 to 1,500 feet. A recent study found that much of the Northern Hemisphere is headed off a “snow-loss cliff” where even marginal increases in temperature could prompt a dramatic loss of snow.

Matt Folts checks a snowmaking gun that is blowing fresh flake on the Blue Ribbon trail at Bromley Mountain Ski Resort. Tik Root / Grist

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By one estimate, only about half of the ski areas in the Northeast will be economically viable by mid-century. Research suggests that Vermont’s ski season could be two to four weeks shorter by 2080, while another study found that Canada’s snowmaking needs will increase 67 to 90 percent by 2050. At Bromley, snow guns have been essential for years; without them, the resort’s mid-January trail count would have likely been in the single digits, rather than 31.

Opening terrain, however, comes at a cost. It takes a lot of horsepower to move water up the hill under pressure, and compress the air the guns need to function. Bromley’s relatively small operation, which produces enough snow each season to cover about 135 acres in three or more feet of the stuff, chews through enough electricity each year to power about 100 homes. All that juice adds nearly half a million dollars to the resort’s utility bill.

But Bill Cairns, Bromley’s president and general manager, says the system is actually much more efficient than it was just a decade ago. “I used to spend about $800,000,” he says. He’s now able to produce more snow for around half the price. “The reduction in cost with snowmaking has totally been a game changer.”

Mastering the 'black art'

Powder days start with specks of dust high in the atmosphere. As they fall, water droplets attach to them, forming snowflakes. Ski areas like Bromley replicate this natural process using miles of pipes that feed water and compressed air to hundreds, sometimes thousands, of snow guns scattered across a mountain.

Early guns mixed compressed air and water inside a chamber, and then used air pressure to propel water droplets skyward through a large nozzle. This was the type of system Fred Pabst Jr., of beer family fame, spent $1 million installing in 1965, making his resort one of America’s earliest adopters.

“It was a black art. We knew nothing,” says Slavko Stanchak, whose inventions and expertise have made him a legend among snowmakers. It was an era when energy was relatively cheap and resorts would rent rows of diesel-powered compressors that threw whatever snow they could generate on the hill. But as energy costs rose in the 1990s and early 2000s, so did the impetus to innovate.

“We focused on making the process viable from a business standpoint,” Stanchak says.

He eventually launched a consulting company that helped ski areas, including Bromley, design or improve their snowmaking operations. On the water side of the equation, Bromley spent the 1990s improving its piping network and added a mid-mountain pump to help get H2O from its ponds to its trails. (Much of the water eventually returns to the watershed during the spring melt.) But the amount of water needed to carpet a ski hill in snow remains relatively fixed from year to year, so there are only so many efficiency gains to be had. Compressing air is what really eats into a budget.

“The air is where the little dollar bills fly out,” says Cairns, adding that two diesel compressors can consume a tanker truck of fuel every week.

The 1990s also saw more efficient snow guns come to market. Tinkerers discovered that devices with multiple small holes, instead of a single large aperture, could utilize water, rather than air pressure, to force fluid upward. This allowed them to move the compressed air nozzles to the outside of the barrel, where they would primarily break the water stream into droplets — a far less strenuous function than forcing them out of the gun.

“An old-school hog might use 800 cubic feet per minute [of compressed air]. This one here uses about 70,” Folts says, pointing toward a tower gun from the early 2000s that stands about 15 feet tall and, unlike the ground guns on Blue Ribbon, can’t be easily moved. Up the hill sits a newer model that can get by on closer to 40 cubic feet per minute, or CFM, and a bit farther down the slope is the resort’s latest tool, which under ideal conditions can use as little as 10. That’s a roughly hundred-fold increase in efficiency.

The state-backed Efficiency Vermont program urges resorts to swap in as many of the more efficient devices as possible. “That work got a real big boost in 2014, when we did the ‘Great Snow Gun Roundup,’” explains Chuck Clerici, a senior account manager at the organization. Before then, it had been doing a handful of sporadic replacements. The roundup retired some 10,000 inefficient models statewide, and, overall, Clerici says snowmaking operations are now using about 80 percent less air than they used to.

Bill Cairns, the president and general manager of Bromley Mountain Ski Resort, with a map of the resort and its snowmaking system.

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While Efficiency Vermont doesn’t separate savings that are the result of snowmaking upgrades from, say, those tied to building improvements, it reports that its efforts to help ski resorts use less energy have saved more than a billion kilowatt hours of electricity between 2000 and 2022. That’s nearly a million tons of planet-warming carbon dioxide emissions or the equivalent of taking more than two gas-fired power plants offline for a year.

“The bigger projects we’ve had over the years have been snowmaking projects,” says Clerici. “We don’t have that many instances in the energy-efficiency realm where you can swap something that uses one-fifth of the energy.”

Standing next to the building that houses Bromley’s air compressors, Cairns points to a concrete slab with two manhole covers that once fed massive underground diesel tanks. “Underneath was fuel,” he says. To his right is a large pipe marked where the carbon-spewing generators used to connect to the rest of the snowmaking system. Now it’s cut off.

One snow gun at a time

Bromley is among the many snowmakers that have been able to eliminate, or drastically reduce, its dependence on diesel air compressors. Electrifying the job has also allowed some resorts to incorporate renewable energy. Bolton Valley, in Vermont, features a 121-foot-tall wind turbine. Solar panels now dot the hills of many others, including Bromley, which leases a strip of land beside its parking lot for a solar farm. The array produces more than half the power its snowmaking system consumes.

America’s snowmaking industry has been historically based on the East Coast, where natural snow can be especially elusive. But that’s changing. “We’re doing a lot more work out West,” says Ken Mack, who works for HDK Snowmakers, one of the largest equipment manufacturers. One of the company’s executives recently moved to Colorado to help meet demand.

The snow guns that HDK sells currently may be reaching the limit of how little water and compressed air they use. “We’re probably getting to a point where we’ve gone as low as we can go,” says Mack. That’s required finding gains in other arenas.

One step snowmakers can take, says Mack, is to better track how much energy they use, ideally in real time. He’s in the midst of trying to help revive a metric called the Snowmaking Efficiency Index, or SEI. It’s a measure of how many kilowatt hours it takes to put 1,000 gallons of water worth of snow on the hill, something Stanchek pioneered years ago but never quite took hold. (For reference, under ideal circumstances it takes about 160,00 gallons to cover one acre in one foot of snow.)

If publicly released, such data could provide transparency and allow ski areas to boast about their efficiency. That’s particularly appealing given that sustainability and environmental stewardship are increasingly top of mind for consumers. But because SEI varies considerably from mountain to mountain, and by temperature, it will likely be most effective as a tool for resorts to compete against themselves, rather than each other.

This year, Bromley’s SEI ranged from about 23 in the warm, early weeks of the season to mid-teens when temperatures dropped. Cairns consistently tries to beat those numbers and can monitor them from his office. If the number ever spikes, he can search for an open gun, leaking water line, or other culprit.

“Anything below 20 is really good,” Cairns says. “So we’re trending the right way.”

An arguably more revolutionary development in snowmaking is the move toward automated systems that can be operated almost entirely remotely. One obvious benefit is reducing the need to find people willing to schlep around a mountain in the dead of night, when temperatures can dip into single digits. More importantly, automation allows resorts to ramp snowmaking up and down quickly, which is particularly useful as global temperatures climb.

Snowmaking can occur when the mercury drops to about 28 degrees F (though the process is optimal at around 22 degrees or less); a threshold Mother Nature sometimes crosses for only brief periods. When it does, resorts can take advantage with a press of a button, instead of having to spend the time dispatching a crew out to fire up all those guns. The ability to operate in shorter time windows also means less energy is needed to run pumps and compressors — and get people up and down the mountain.

“You’re done sooner,” says Mack. Where it might take 100 man-hours to cover a trail, automation could cut that to 20 or 30. “It’s absolutely a savings. But it also gives you a little bit of reserve if you need it.”

Europe is far ahead of North America when it comes to automation, in part because governments have subsidized the daunting expense of running electricity and communication lines across a mountain. The cost of installing the technology can quickly run into the millions and, without subsidies, the benefits for American ski areas have been limited largely to smaller mountains in warmer climates, such as in the mid-Atlantic, where it is vital to surviving. But bigger resorts in snowier locales, including Stowe, Stratton, and Sugarbush in Vermont and Big Sky in Montana, have been testing the equipment.

“The future of snowmaking is definitely going to be automation,” says Cairns. “It’s just a lot of money, and nobody really wants to subsidize that yet.”

Bromley is testing one semi-automated gun that could avoid the wiring issue. It uses the existing compressed air supply to spin an internal turbine that creates just enough energy to run a small onboard computer. By monitoring the weather conditions, it can automatically adjust the rate of water and air flow to produce optimal snow.

“Those guns don’t need any power,” says Folts, as he finished adjusting the position of one gun and moved to the next. “That’s kind of another next level.”

Until then, Folts and his crew lumber on into the night, one gun at a time.

Apple and Google are warning some U.S-based employees on visas against traveling outside of the country to avoid the risk of getting stuck coming back, as the Trump administration toughens vetting of visa applicants, according to recent internal memos from the tech companies that were reviewed by NPR.

U.S. consulates and embassies have been reporting lengthy, sometimes months-long delays, for visa appointments following new rules from the Department of Homeland Security requiring travelers to undergo a screening of up to five years' of their social media history — a move criticized by free speech advocates as a privacy invasion.

For Apple and Google, which together employ more than 300,000 employees and rely heavily on highly-skilled foreign workers, the increased vetting and reports of extended delays were enough for the companies to tell some of their staff to stay in the U.S. if they are able to avoid foreign travel.

"We recommend avoiding international travel at this time as you risk an extended stay outside of the U.S.," Berry Appleman & Leiden, a law firm that works with Google, wrote to employees.

The law firm Fragomen, which works with Apple, wrote a similar message: "Given the recent updates and the possibility of unpredictable, extended delays when returning to the U.S., we strongly recommend that employees without a valid H-1B visa stamp avoid international travel for now," the memo read. "If travel cannot be postponed, employees should connect with Apple Immigration and Fragomen in advance to discuss the risks."

Apple and Google declined to comment on the advisories, which were first reported by Business Insider.

It's the latest sign of how the Trump administration's aggressive immigration policies are affecting the foreign-born workforce in the U.S.

Earlier this year, the White House announced that companies will be subjected to a $100,000 fee for all new H-1B visas, a type of visa popular among tech companies eager to hire highly skilled workers from abroad.

H-1Bs typically last three years, and applicants have to return to an embassy or consulate in their home country for a renewal, but reports suggest such a routine trip could lead to people being stranded for months as a result of the Trump administration's new policies.

On Friday, The Washington Post reported that hundreds of visa holders who traveled to India to renew their H-1Bs had their appointments postponed with the State Department explaining that officials needed more time to ensure that no applicants "pose a threat to U.S. national security or public safety."

At Google, the Alphabet Workers' Union has been campaigning for additional protections for workers on H-1B visas. Those workers would be particularly vulnerable in the event Google carried out layoffs, since losing employer sponsorship could jeopardize their legal status, said Google software engineer Parul Koul, who leads the union.

The need to support H-1B holders at Google, she said, has "only become more urgent with all the scrutiny and heightened vetting by the Trump administration around the H1B program, and how the administration is coming for all other types of immigrant workers."

Copyright 2025 NPR

The Wallis Annenberg Wildlife Crossing in Agoura Hills isn’t slated to open until fall 2026, but there’s already been a wild discovery near the forested overpass.

National Park Service biologists recently captured and collared a female mountain lion, now named P-129, inside the construction site of the forthcoming crossing.

She is the third mountain lion to be captured through the crossing site, and the first since construction started.

Anaerial view of the Wildlife Crossing site in progress taken on December 6, 2025.

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“The mountain lion was captured and tracked and traveling right around the Wallis Annenberg Wildlife Crossing — right inside of it,” said Beth Pratt, Regional Executive Director of the National Wildlife Federation, one of the organizations that's managing construction of the project.

“To actually capture one right in the site of the crossing being built was pretty special,” she added.

A Puma’s path

P-129 was captured as part of the National Park Service’s Puma research project.

Scientists with the service have been studying mountain lions in the Santa Monica Mountains and the surrounding region since 2002. It’s one of the longest continuous urban mountain lion studies.

“The knowledge that the Park Service has gleaned from these decades of research [has] helped us understand how they travel and use the landscape in the Santa Monica Mountains,” Pratt told LAist.

The soon-to-be-completed wildlife crossing that will go over the 101 freeway was set in motion because of research done by the Puma project.

Although the crossing is intended for all wildlife, mountain lions are the ones most at risk from isolation caused by the freeway, said Pratt. The discovery of genetic degradation among mountain lions is what raised alarm bells that prompted the construction of the overpass.

In 2020, birth defects began manifesting in tracking data. Kink tails, only one descended testis and the degradation of sperm quality all pointed to the next inevitable development: sterility.

Indeed, Pratt said a major goal of the crossing is to bring "dates" — mating partners — for these mountain lions who are living in the Santa Monica Mountains.

Coming next Fall

Construction workers for the Wallis Annenberg Wildlife Crossing continue work on the project.

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The crossing has been under construction since 2022 and is on track to open next fall. The main structure over the 101 has been completed, with a habitat of native plants growing on top.

Right now, Pratt said a massive utility relocation of electricity, water and gas lines is underway.

“We have to move those utility lines out of the way, and then the secondary structure over Agoura Road is being constructed as well,” she said.

With the big unveiling in sight, the team is now taking bets on which animal will make its maiden passage next year.

“It could be [P-129], or it could be the dominant male in the area," Pratt said. "Or it could be a new cat that we don’t even know.”

It's easy to lose our critical thinking skills around the holidays. In a frenzy of last-minute gift shopping and travel bookings, we can be more anxious, more distracted and more vulnerable.

"There's a lot of hustle and bustle during the holiday season, so there's a lot more opportunities for scammers to steal from us," says Amy Nofziger, senior director of Fraud Victim Support at the AARP Fraud Watch Network, a fraud prevention service.

In a recent AARP survey of nearly 2,000 U.S. adults, nearly 9 out of 10 reported being targeted by or falling for some type of scam during the holiday season in the past year. Common schemes included fake shipping notifications, stolen packages and fake charity and donation requests.

Being aware of the tactics that scammers use this time of year can safeguard you from falling victim to fraud, Nofziger says. She shares four types of scams her team has seen this season.

Fake retail ads on social media

Scammers open stores on social media platforms for a limited period of time. They sell fake branded clothing or jewelry and use stolen logos or similar domain names to appear authentic. The store might disappear shortly after you've placed your order.

How to protect yourself: "If you're using a vendor that you haven't normally used, take the name of the vendor, put it in a new search, type the words 'scam,' 'fraud' and 'complaint' after it, and use other shoppers' experiences with the company to guide your own," Nofziger says.

She recommends always using a credit card to pay for online goods. "You have greater consumer protections," she says, meaning, in the event you fall for a scam, you can have an easier time getting your money back.

Fake gift cards

If you're looking to buy a gift card for someone, know that it is possible for scammers to get the gift card number and PIN before you buy it.

"They actually remove stacks of gift cards off of the card carousels, log every gift card number and PIN into their system, then load those gift cards back onto the carousels," says Nofziger.

If you add money onto one of these cards, scammers are notified and able to instantly withdraw it. "You could not even have left the store yet and that money could be drained," she says.

How to protect yourself: Nofziger recommends buying gift cards that are close to the front of the store and might have had more eyes watching them. She also suggests purchasing electronic gift cards instead of physical cards that can be tampered with.

Fake delivery texts

It's more common to receive unexpected packages around the holidays, and scammers will use that to their advantage, says Nofziger.

"They'll send out fake notifications saying that they're from a shipping company and that there's a problem with your account," like a missing piece of your address, she says. "But most of the time, if there's a problem with a package, you will hear directly from the vendor."

How to protect yourself: If you receive an unexpected text message from a shipping company like UPS or FedEx asking for your personal information, Nofziger's advice is to reach out separately to the company's customer service line and confirm that a package is indeed coming your way. You can also verify your address directly through their website.

Usually, "this is nothing but a phishing scam," she says, or an attempt to dupe you into sharing personal information.

Travel deals too good to be true

Travel prices can get expensive around the holidays, leading some to search online for better deals. But Nofziger says to be wary of suspiciously cheap fares and travel websites you haven't used before.

Nofziger's team receives a lot of reports about car rental scams. "People think they're getting a great deal, but they have to prepay with a prepaid gift card," she says. "Then they get to their location and there's no car."

How to protect yourself: She recommends sticking to vendors you have a preexisting relationship with and vetting any new travel website you might use.

Ultimately, if you fall for any of these scams, know that it's common. "Be proactive and report it as quickly as possible," says Nofziger. You can report the incident to local law enforcement, the Federal Trade Commission and the AARP Fraud Watch Network.

The digital story was edited by Malaka Gharib, with art direction by Beck Harlan. We'd love to hear from you. Leave us a voicemail at 202-216-9823, or email us at LifeKit@npr.org.

Listen to Life Kit on Apple Podcasts and Spotify, and sign up for our newsletter. Follow us on Instagram: @nprlifekit.

Copyright 2025 NPR

With Speaker Emerita Nancy Pelosi not running for reelection, San Francisco is about to experience its most spirited congressional race since 1987, when Pelosi beat 13 candidates to fill the seat left open by the death of Rep. Sala Burton.

The 85-year-old Democrat leaves behind a historic record of accomplishment — from the power she achieved as a caucus leader and Speaker to delivering significant legislative victories, including passage of the Affordable Care Act, and her unparalleled ability to criticize President Donald Trump.

“Nancy Pelosi was the most effective speaker of the modern era, a legendary political thinker and strategist,” said Brian Hanlon, co-founder and CEO of California YIMBY, a pro-housing group. “And San Francisco punches way above its weight in terms of both national and state politics. So, who is San Francisco going to put in this seat?”

So far, three very different candidates have emerged as the top contenders to represent Pelosi’s district, which encompasses most of the city, except a southern slice that includes the Excelsior, Visitacion Valley and Oceanview neighborhoods.

The leading candidates

Connie Chan

San Francisco supervisor, District 1

The 47-year-old Democrat represents the northern section of San Francisco, including the Richmond District. Chan, who was born in Hong Kong and came to the U.S. as a teenager, is leaning into her biography as the basis of her candidacy.

“As a first-generation immigrant, I have the lived experience, understanding the challenges that immigrant community faces, and most definitely during this time, when we see the Trump administration sending ICE agents to our streets and also in courtroom, firing our immigration court judges so that they can detain our immigrants illegally,” Chan told KQED. “That is, first and foremost, one of our top priorities.”

Now in her second term on the Board of Supervisors, Chan, who once worked as an aide to former Supervisor Aaron Peskin, opposed Mayor Daniel Lurie’s Family Zoning Plan, which allows denser housing in neighborhoods like the Richmond, where single-family homes dominate. She also opposed a voter-approved ballot measure to close part of the Great Highway and create a public park, and supports sending the issue back to voters.

Scott Wiener

State senator 

Now in his eighth year in Sacramento, Wiener has championed landmark legislation to facilitate — even mandate — more housing construction in California, a position that has won him both support and criticism.

By any standard, Wiener, 55, is a prolific legislator. This year alone, 12 of his bills were passed and signed by Gov. Gavin Newsom. In an evaluation of state lawmakers across the country, Wiener was ranked as the most effective member of the California State Senate by the nonpartisan Center for Effective Lawmaking, a project of the University of Virginia and Vanderbilt University.

Wiener, who is openly gay, said it is “definitely time” for the city’s LGBTQ+ community to elect one of its own to Congress. He would be the first openly gay representative from San Francisco in the House.

Saikat Chakrabarti

Software engineer and political activist

Chakrabarti, 39, jumped into the race before Pelosi announced her retirement, saying it was time for a new generation of leaders for the Democratic Party. Wiener also entered the race before Pelosi made her plans public.

After making millions of dollars as one of the first software engineers at the payment processing company Stripe, Chakrabarti worked on Sen. Bernie Sanders’ 2016 presidential campaign and later became chief of staff to progressive icon Rep. Alexandria Ocasio-Cortez.

“I think I’m the only one willing to challenge the Democratic party establishment,” Chakrabarti told KQED this week. “People know that the Democratic party needs a new direction, it needs new ideas and it needs solutions that are as big as the problems that we face. And that’s what I’m offering the voters.”

What voters care about

“Affordability” is the mantra for Democratic candidates across the country, and this race will be no different. Chan, who criticizes Wiener’s “Sacramento version of affordable housing” in her campaign announcement video, will emphasize affordability as it relates to housing, but also in health care and child care.

Chakrabarti, who said he is more pro-housing than Chan, supports the controversial plan to build 800 units of housing above a Safeway in the Marina.

As expected, all three candidates promise strong opposition to Trump’s policies, including ICE raids, mass deportations and federal budget cuts. Wiener, who authored a new law banning ICE agents from wearing face coverings and bills supporting trans students, is a frequent target of right-wing hatred. He wears it like a badge of honor, and even has a “Scott’s MAGA Fan Club” section on his campaign site highlighting attacks by Tucker Carlson, Marjorie Taylor Greene and other conservatives.

While housing is largely a local issue, defense spending is not — and U.S. funding for Israel could become a contentious topic. Wiener, who is Jewish, has been outspoken about antisemitism while trying to strike a balance between Israel’s right to exist and opposing its war in Gaza.

Chakrabarti has made Palestinian rights a centerpiece of his campaign.

“I’m opposed to military funding in Israel as long as the genocide continues,” he said.

Chan has also said she would not support sending “weapons of war” to Israel, calling the situation in Gaza a human rights violation that she believes meets the legal definition of genocide.

Money, endorsements — and Pelosi’s shadow

The success or failure of a campaign depends on many factors, including name recognition, their record, voter enthusiasm, endorsements and resources.

Chakrabarti is the least well-known of the candidates, but he has access to enormous personal wealth to self-fund his campaign. Since this is his first run for office, he mostly points to his work behind the scenes, including his role in helping promote the Green New Deal, which he said helped center climate change as the key environmental issue.

“It’s going to take a movement of candidates and people to make this happen,” he said. “But I think that’s what’s possible right now, and that’s why I’m running.”

Chan, who is running for the first time outside a relatively small district, could face fundraising challenges. But her relationships with local unions, such as Unite Here Local 2, which represents workers in the hospitality industry, could help with campaign cash and volunteers.

Wiener has been raising money for a potential congressional run since 2023, reporting more than $1 million raised through September, according to federal campaign finance data. He said fundraising accelerated significantly after Pelosi announced her retirement.

It’s not clear if Pelosi herself will put her thumb on the scale for one of her would-be successors. Among the candidates, she seems most aligned with Chan, who has appeared alongside her at recent public events.

An endorsement from the San Francisco Democratic Party could provide a major boost. But that’s a significant hurdle, as it requires support from 60% of local delegates.

Local party chair Nancy Tung, a leader of the party’s more moderate wing, thinks only one candidate could conceivably win an endorsement.

“It’s within the realm of possibility that Scott Wiener would actually get the endorsement,” Tung told KQED this week. “I think he’s probably got the best chance.”

In the June primary, voters will decide which two candidates will advance to the November general election in the race for this solid Democratic seat.