When voters go to the polls in California's primary on Tuesday, instead of only being able to vote for candidates in their own party, they will be able to vote for anyone they please.
Tuesday will be the first statewide test of California's new open primary system, where the top two candidates move on to the general election, regardless of party. Backers hope this system will favor moderates.
In California, there aren't very many purple areas. The state has strongly Democratic regions and strongly Republican regions — and the Democrats dominate.
Voters in Wisconsin will decide Tuesday whether or not to recall Republican Gov. Scott Walker. It's been one of the most expensive statewide races in American history, and the stakes in that election could have national implications, for unions, for deficit hawks, for businesses, even for President Obama's re-election.
The vote over whether to recall Walker is so important, it's drawn millions in outside money and some of the biggest political stars in the country. Now millions of dollars are flowing in, too.