In 2008 CA went for BO by about 61.1% vs. 37% for GOP's McCain.
All you CA readers here:
Check out the list of big blue counties that went for BO in 2008 (pp. 17-19).
http://www.sos.ca.gov/elections/sov/2008_general/sov_complete.pdf
Compare the number of BO bumper stickers and yard signs you see today in cities in said counties with what you saw at this time of year in 2008.
What do you see?
Alameda County went 78.8% for BO in 2008. Today in the SF East Bay I can see barely any BO bumper stickers at all.
I will bet you fourteen trillion dollars California goes for Obama.