Here are some of the primaries around the nation today, besides Florida's.
Even though she's not running, Sarah Palin is an issue as her choice for Alaska's U.S. Senate post takes on the incumbent. She has her money on attorney and political unknown Joe Miller, who seems to have gained little traction against Republican Sen. Lisa Murkowski, political experts in the state have said.
The top contest here is the GOP race between Sen. John McCain, who faces a challenge from former Rep. J.D. Hayworth. The race has shaped up largely as a contest over who's tougher on immigration, with McCain's stance drifting right
A change of the primary election date this year from September to today threatens to depress voting. "A lot of people are vacationing still," said Nicole Beaudoin, 28, of Marshfield.
Sources: Associated Press, Arizona Republic, Washington Post