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
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
Rep. Michele Bachmann, R-Minn., announces an end to her campaign for president on Wednesday in Des Moines, Iowa. Chris Carlson/AP hide caption
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
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
Texas Gov. Rick Perry walks to his bus after a campaign stop at the Glenn Miller Museum in Clarinda, Iowa on Dec. 27. Charlie Riedel/AP hide caption
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
Silent For A Night (Or Two) In Iowa, Candidates Keep Pace In Ads
Iowa Public Radio News
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
Republican presidential candidate, former House Speaker Newt Gingrich listens at right as Donald Trump talks to media after a meeting in New York. Seth Wenig/AP hide caption
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
Minnesota Rep. Michele Bachmann spoke at the Commonwealth Club of California on Thursday in San Francisco.
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Herman Cain (right) speaks as Texas Gov. Rick Perry looks on during a GOP presidential debate at Dartmouth College on Oct. 11.
Andrew Harrer/AFP/Getty Images hide captionRepublican presidential candidate Herman Cain speaks before Florida's straw poll at the Orange County Convention Center in Orlando on Saturday. Cain won the straw poll with 37 percent of the vote. Mark Wilson/Getty Images hide caption
Republican presidential candidate former Massachusetts Gov. Mitt Romney, right, makes a point as Texas Gov. Rick Perry listens, during a debate in Orlando, Fla. Phelan M. Ebenhack/AP hide caption
Republican presidential candidate Rep. Michele Bachmann, R-Minn., speaks during the California Republican Party Fall Convention dinner in Los Angeles. Chris Carlson/AP hide caption