It's pretty much of a given that John McCain will win the lion's share of Republican delegates in tonight's Super Tuesday primaries. However, recent polls show that Mitt Romney has been surging in California and might very well "win" the state's winner take all by congressional district primary. (For the Republican Party in California, there are 3 delegates assigned to each of the state's 53 congressional districts. Whoever wins the most congressional districts will receive a bonus number of delegates; 11, I believe).
If the polling trend proves accurate, and California ends up going for Romney, I think there's a better than average chance that Romney could overtake McCain in the next round of primaries in March. At the very least, Romney could ride his campaign all the way to the National Republican Convention.
Update: As of 10:30 p.m. PST it appears McCain has been declared the winner of the overall vote for the California Republican Primary. Even worse news if you're anti-McCain like me is that McCain is leading pretty big in all of the congressional districts that have started reporting.