What to watch for Tuesday in politics

The big show Tuesday in politics is the Florida primary. Voting ends at 7 p.m. EST in most of the Sunshine State, except for the western section of the Panhandle which is in the Central Time Zone and polls will close an hour later. Polls show Mitt Romney with a double-digit lead, but Newt Gingrich is working hard for a surprise victory. Both candidates have last-minute campaign stops planned. Don't be surprised if the networks project a winner right at 8 p.m. EST.

What about Rick Santorum and Ron Paul? Both will be campaigning in Colorado and Nevada. Nevada's caucus is Saturday, and Colorado's is one week from today.

President Obama has a fairly routine day scheduled. He meets with the Cabinet at 10:45 a.m. EST, Secretary of Defense Leon Panetta at 4:30 p.m. EST and then has two fund-raisers in Washington this evening.

First lady Michelle Obama, however, does not have a routine day. She appears on 'The Tonight Show With Jay Leno' at 11:35 p.m. EST. Topics are expected to include what life is like in the White House. Her first appearance on the show was Oct. 27, 2008.