5:40 p.m. Last polls close in California at 10:00 p.m. CST. The Democrats will allocate 370 of its 441 convention delegates from the primary today: 241 delegates are allocated based on the vote in each of the state's 53 Congressional districts, while 129 delegates are allocated based on the statewide vote.

Republicans will allocate 170 of its 173 convention delegates today with 3 each for the state's 53 Congressional districts and 11 at-large delegates for the candidate receiving the greatest number of votes statewide.

11:15 p.m. Fox News and NBC project Hillary Clinton and John McCain the winners in California tonight.

1:35 a.m. Republican (42% reporting)
McCain = 43%
Romney = 29%
Huckabee = 12%
Giuliani = 8%
Paul = 4%

McCain registered a big win in California - especially considering his losses earlier today to Huckabee in Georgia, Tennessee, and Alabama. The question in California is how big will McCain's margin ultimately be, and how many delegates can Romney scrape together? Romney's numbers have been on the rise all evening - starting at 23 percent and rising now to 29 percent. McCain's numbers have fallen from 46 percent to 43 percent.