"It's not going to be long before the liberal areas of LA and SF aren't going to have to worry about secession, they're going to be kicked out."
I wish that were the case, but the Kerry margins over Pres. Bush in CA coastal counties were staggering. I live in Oakland, CA which is in Alameda County. Pres. Bush received only 23.5% of the vote in a county which turned out nearly 600,000 voters and gave Kerry a 287,000 vote margin. In SF County, where Pres. Bush rec'd just 15.3% of the vote, Kerry had a 241,000 vote margin over Pres. Bush. Other Bay Area counties were as follows: San Mateo Co. (Bush 29.4%, Kerry with a 114,000 vote margin); Santa Clara Co. (Bush 34.7%, Kerry with a 175,000 vote margin; Sonoma Co. (Bush 31%, Kerry with an 80,000 vote margin); Contra Costa Co. (Bush 36.7%, Kerry with a 101,000 vote margin; Marin Co. (Bush 25.9%, Kerry with a 57,000 vote margin).
Altogether, Bush lost these seven Bay Area counties by 1,055,000 votes. Added to Los Angeles County, which Kerry won by 800,000 votes, gives Kerry a 1.9 million vote cushion. The problem for Republicans is that most of these counties are still growing at a decent rate which offsets higher growth in smaller exurban CA counties.
California is the exception to everything. The coastal counties may not be stagnant or declining in population here yet but the Democrats can't break through into interior "Red" California. When we revisit the state in 20 years, the picture may be entirely different.