The Campaign to Defeat Barack Obama, a small-donor PAC, has launched a bus tour to reach conservative voters in hotly contested states, while trying to raise money to launch an anti-Obama TV ad. Yfat Yossifor/Courtesy of Mlive.com hide caption

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People cast their ballots at an early-voting center in Columbus, Ohio, on Oct. 15. Jewel Samad/AFP/Getty Images hide caption

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Alan Shull attends a job fair in Portland, Ore., on April 24. Rick Bowmer/AP hide caption

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A sign directing voters to a polling place is seen during the first day of early voting on Monday in Washington, D.C. Brendan Smialowski /AFP/Getty Images hide caption

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President Obama and GOP presidential nominee Mitt Romney walk away after they greet each other at the end of the third presidential debate in Boca Raton, Fla., on Monday. Saul Loeb/AFP/Getty Images hide caption

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Democrat Richard Carmona (left) and Republican Rep. Jeff Flake shake hands before Thursday's debate in Chandler, Ariz. Ross Franklin/AP hide caption

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Former Maine Gov. Angus King, an independent candidate for the U.S. Senate, greets potential voters Oct. 1 in Bath, Maine. Joel Page/AP hide caption

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Rep. Michele Bachmann, R-Minn., speaks during the Family Research Council Action Values Voter Summit last month in Washington. Mandel Ngan/AFP/Getty Images hide caption

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A voter registration form and absentee ballot application at a Franklin County polling place in Columbus, Ohio, on Tuesday. The deadline to register to vote in Ohio is Oct. 9. Matt Sullivan/Reuters/Landov hide caption

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Republican presidential nominee Mitt Romney and President Barack Obama shake hands at the first presidential debate at the University of Denver, Wednesday. Charlie Neibergall/AP hide caption

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Early voting has begun in the battleground states of Ohio, Virginia and Iowa. Voting booths were set up for early voting Thursday at the Black Hawk County Courthouse in Waterloo, Iowa. Ahead of Wednesday's first presidential debate, an NPR poll finds President Obama with a 7-point lead nationally, but his GOP challenger, Mitt Romney, is within striking distance. Scott Olson/Getty Images hide caption

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A sign directs voters to polls at a polling station on Nov. 4, 2008, in Shallotte, N.C. Logan Mock-Bunting/Getty Images hide caption

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Sen. Jon Tester, D-Mont., (center) campaigns at a parade Saturday in Belgrade, Mont. Martin Kaste/NPR hide caption

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Republican presidential candidate Mitt Romney speaks during a roundtable discussion on manufacturing this Wednesday in Bedford Heights, Ohio. MANDEL NGAN/AFP/Getty Images hide caption

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Linda McMahon (center) visits a senior center in Naugatuck, Conn., this month. Jessica Hill/AP hide caption

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