Rep. Michele Bachmann Rep. Michele Bachmann

Minnesota Republican Rep. Michele Bachmann and her husband, Marcus, recite the Pledge of Allegiance before announcing her candidacy for president last June in Waterloo, Iowa. Steve Pope/Getty Images hide caption

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Steve Pope/Getty Images

Rep. Michele Bachmann, R-Minn., announces an end to her campaign for president on Wednesday in Des Moines, Iowa. Chris Carlson/AP hide caption

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Chris Carlson/AP

Minnesota Rep. Michele Bachmann, joined by husband Marcus (left) and family and friends, announces that she will end her campaign for president in West Des Moines on Wednesday. Chris Carlson/AP hide caption

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Chris Carlson/AP

Texas Gov. Rick Perry speaks at a campaign event at Clark Electric Co-op on Dec. 27 in Osceola, Iowa. Perry's stance on immigration has troubled some Iowa voters. Justin Sullivan/Getty Images hide caption

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Justin Sullivan/Getty Images

For Some Iowa Voters, Immigration Is Decisive Issue

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In a last bout of campaigning before Christmas, Rep. Michele Bachmann of Minnesota signs autographs at the National Motorcycle Museum in Anamosa, Iowa, on Dec. 22. Charlie Riedel/AP hide caption

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Charlie Riedel/AP

Silent For A Night (Or Two) In Iowa, Candidates Keep Pace In Ads

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Republican presidential candidate former House Speaker Newt Gingrich speaks during a Republican presidential debate in Sioux City, Iowa, Thursday, Dec. 15, 2011. Eric Gay/AP hide caption

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Eric Gay/AP

Republican presidential candidates jockeyed for airtime when they met for their first prime time TV debate on Saturday night in South Carolina. Alex Wong/Getty Images hide caption

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Alex Wong/Getty Images