Early voters camped out and battled the rain for the chance to cast the first ballots Tuesday.
People will be able to vote for president, U.S. Senate and other races by mail or in person without providing a reason.
Eary voting sites have had a significant impact in the battleground state of Ohio. In 2008 about 1.7 million votes, around 30 percent of Ohio’s total votes, came in ahead of Election Day.
First lady Michelle Obama planned to visit Cincinnati to kick off early voting. Republican Mitt Romney's campaign also planned a get-out-the-vote bus tour in southwest Ohio and elsewhere.
Ohio's elections chief Jon Husted said that he was confident the state is prepared. He said that local boards have received more than 922,000 absentee ballot applications as of Friday.
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