Republican presidential candidate Rep. Michele Bachmann arrives for a rally in Costa Mesa, Calif., on Friday. Chris Carlson/AP hide caption

itoggle caption Chris Carlson/AP

Republican presidential candidate Rep. Michele Bachmann (R-MN) and her husband, Marcus, wave to the crowd after she speaks at the Iowa Republican Party's straw poll in Ames, Iowa, on Saturday. Bachmann won the poll with 4,823 votes. Charles Dharapak/AP hide caption

itoggle caption Charles Dharapak/AP

Republican presidential candidates participated in the Iowa GOP/Fox News Debate at the CY Stephens Auditorium in Ames, Iowa, Thursday. From left, former Sen. Rick Santorum (R-PA); businessman Herman Cain; Rep. Ron Paul (R-TX), former Massachusetts Gov. Mitt Romney; Rep. Michele Bachmann (R-MN); former Minnesota Gov. Tim Pawlenty; former Utah Gov. Jon Huntsman; former House Speaker Newt Gingrich. Charlie Neibergall/AP hide caption

itoggle caption Charlie Neibergall/AP

Rep. Michele Bachmann (R-MN) has been holding multiple campaign events each day, in preparation for next week's Iowa straw poll. Susan Walsh/AP hide caption

itoggle caption Susan Walsh/AP

Republican presidential hopeful Rep. Michele Bachmann of Minnesota speaks to the Christian Chamber of Commerce at Christ Central Ministries in Columbia, S.C., on Monday. Brett Flashnick/AP hide caption

itoggle caption Brett Flashnick/AP