Florida Republicans say Tampa and Orlando hold the key to a McCain victory this evening. The Florida Panhandle will also be critical including the cities of Tallahassee, Pensacola and Panama City. Obama is counting on a big turnout in Miami-Dade County.
Spending on Florida TV ads swelled to $33.3 million for the Obama campaign as of Oct. 29, compared with $10.6 spent by McCain and the RNC.
MISSOURI: 11 Electoral Votes
Polls close in Missouri at 8 p.m. EST Tuesday night.
Seen as a true bellwether, Missouri has backed the winner in every presidential election since 1900, with one exception: Adlai Stevenson won the state in 1956 but lost the presidential race to Dwight Eisenhower.
Now, the latest NBC/Mason-Dixon poll, released Sunday night, shows a nailbiting race in the Show-Me State, with McCain up 47-46 over Obama.
A strong Obama supporter, Missouri Sen. Claire McCaskill, has been advising Democrats on how to increase support in Greene and St. Charles counties, both critical to McCaskill's win in 2006, as well as in other rural areas. McCaskill introduced Biden at a Monday rally in Lee's Summit at the same time Palin appeared at a rally in Jefferson City.
The office of Missouri Secretary of State Robin Carnahan anticipates that voter turnout could be half a million more than in the 2004 election.
ABC News' Bret Hovell, Karen Travers, Teddy Davis, Tahman Bradley, David Chalian and Gary Langer contributed to this report.