-- Democrats back Obama 78 to 9 percent, compared with the softer support for McCain in his own party - 65 to 16 percent.
-- Three times as many Obama supporters as McCain voters describe themselves as "very enthusiastic" for their candidate - 51 to 17 percent; a full 27 percent of McCain's supporters describe themselves as "not enthusiastic," compared with just 5 percent of Obama's supporters.
-- Obama has a nearly 4-to-1 lead - 64 to 18 percent - among independent and decline-to-state voters in California, and he also leads by more than 2-to-1 among those Californians who describe themselves as holding "middle of the road" political philosophies.
-- Obama bests McCain among California voters of every religion - except those who are Protestant. Evangelical Christians, specifically, prefer McCain 48 to 35 percent.
-- In geographic areas, the Illinois senator has a 6-to-1 lead over McCain in the Bay Area and leads 61 to 27 percent in Los Angeles - two areas that comprise 44 percent of the state's population. McCain leads Obama in one geographic area of the state, the Central Valley - but only barely, at 40 to 39 percent. And McCain leads Obama 44 to 35 percent in inland counties, but Obama leads McCain 62 to 24 percent in coastal counties.
-- Among Latino voters, Obama enjoys a huge edge - 64 to 21 percent - and he is widely preferred over McCain by Asians (59 to 23 percent) and by African Americans (89 to 5 percent).
-- Obama has a 2 1/2-to-1 lead among voters under 40 and leads McCain in every other age group. Even among white non-Hispanics, Obama holds a double-digit lead - 47 to 37 percent - in California, the poll showed.
The Field Poll has a margin of error of plus or minus 3.9 percentage points overall, and 5.1 percentage points for the questions to 376 likely Democratic and nonpartisan voters asked about Obama's running mate.
http://www.sfgate.com/cgi-bin/article.cgi?f=/c/a/2008/07/15/MN2T11PHGD.DTL&tsp=1