With just one day to go, presidential candidates Barack Obama and John McCain hit the campaign trail for the final stretch of the 2008 presidential race. McCain kicked off Monday with a rally in Miami, Florida, at around midnight. "My friends, it's official: There's just one day left until we take America in a new direction," he told the crowd. He also planned to swing through seven states that had him running neck-and-neck with Obama.

Republican candidate John McCain greets supporters at a rally in Tampa, Florida, on November 3.

The Democratic candidate had a quieter morning before heading to a rally in Jacksonville, Florida. National opinion polls place Obama in the lead by a comfortable margin. He reported feeling "peaceful," but reminded supporters to head to the polls and make their votes count. "The question is going to be who wants it more," Obama said. "And I hope our supporters want it bad, because I think the country needs it."

Some States Still Up for Grabs

The polls show that six states remain very close: Florida, Indiana, Missouri, North Carolina, Nevada and Ohio. Obama appears to hold leads in 24 states, plus the District of Columbia. This would add up to 291 electoral votes, which is more than he needs to win. Obama is also gaining popularity in states that have consistently voted Republican, including Virginia and Colorado.

Democratic candidate Barack Obama at a campaign stop in Jacksonville, Florida, on November 3.

But opinion polls are only a snapshot of what could happen on Election Day—not the whole picture. As of Monday afternoon, McCain had a solid lead in 21 states, with 163 electoral votes. On Election Dayday, anything could happen. The six states that are up for grabs might go to McCain. Or, the traditionally Republican states leaning toward Obama could tilt back.

A lot rests on Florida, the nation's largest swing state. Florida has 27 electoral votes. Turnout is expected to hit 80%. In the last two elections, the state's many voting systems had problems, including lost votes, flawed or old machines and voter identification issues. Officials are concerned that chaos will again plague Florida's polls, which would in turn affect the outcome of an extremely close race. But the current governor has made changes that should help the system run more smoothly. "Florida could be close," says Barry Richard, a lawyer who was involved in the election recount in 2000. "(But) it doesn't look like it's all going to rest on a single state."

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