Obviously Obama Will Win CA, but Why?

The blog FiveThirtyEight (as in the number of electoral votes) has been going state by state doing electoral projections. Today was California: "Coastally Urban and Maverickily Liberal, California is one of only four majority-minority states (TX, HI, NM) in the nation. It’s a guaranteed 55 electoral votes for Barack Obama, as it has been for every Democrat since 1992. It has the smallest percentage of rural voters in America. Ironically, it's a state both candidates have visited far out of proportion to the closeness of the race, because both sides need wealthy donors who populate the state. Over ten percent of the Five hundred Thirty Eight electoral votes in play in a presidential election are represented by California." The analysis goes on to each of the candidates individually.