Republican officials Rob Collins, Phil Cox and Matt Walter all seemed pleased at a briefing for journalists about the GOP's midterm election prospects, as did former first lady Mamie Eisenhower. Frank James/NPR hide caption

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Frank James/NPR

Some voters are a lot more complicated than is commonly understood, a new Pew Research Center study suggests. In Denver, an election worker collects a mail-in ballot from a voter on Tuesday. Ed Andrieski/AP hide caption

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Ed Andrieski/AP

Catching up with a national trend, more Hispanics say they are not affiliated with a particular religion — a shift that could make the gap between Latinos and Republicans even wider. iStockphoto hide caption

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iStockphoto

Volunteer Tom Strain carries debris from an empty lot as part of an Earth Day cleanup effort in Camden, N.J. The Earth Day events celebrated on April 22 promote a sustainable and clean environment. Mel Evans/AP hide caption

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Mel Evans/AP

President Obama, pictured here with Lilly Ledbetter, and congressional Democrats are working the equal pay issue hard in a midterm election year when they will need as many women to vote as possible. Carolyn Kaster/AP hide caption

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Carolyn Kaster/AP

Hilary Clinton at last week's Clinton Global Initiative forum in in New York City. /PA Photos/Landov hide caption

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/PA Photos/Landov

Rep. Justin Amash of Michigan, a libertarian Republican, says recent surveillance leaks have "brought home" libertarian ideas. J. Scott Applewhite/AP hide caption

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J. Scott Applewhite/AP

Amid Struggle For 'Soul' Of GOP, Libertarians Take Limelight

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