Jan Ebeling, of the United States, rides his horse Rafalca in the equestrian dressage competition at the 2012 Summer Olympics, Tuesday, Aug. 7, 2012, in London. Rafalca is co-owned by Ann Romney, the wife of U.S. Republican presidential candidate Mitt Romney
#37 Oct. 1-Romney Seeks to Burnish Image as Man of Vision in Debate; U.S. Republican presidential candidate Mitt Romney confers with advisers on board his campaign plane on October 1, 2012. Photograph: Jewel Samad via AFP/GettyImages
#26 Oct. 3-Romney Won First Debate, 67 Percent of Voters Tell CNN; Mitt Romney, Republican presidential candidate, left, shakes hands with U.S. President Barack Obama following a presidential debate at the University of Denver in Denver, Colorado, on Wednesday, Oct. 3, 2012. Andrew Harrer/Bloomberg
Republican presidential candidate Ted Cruz failed to disclose to the Federal Election Commission a loan from Goldman Sachs for as much as $500,000 that was used to help finance his 2012 U.S. Senate campaign.
Decades: A supporter wears campaign buttons from Republican presidential candidate and former Massachusetts Governor Mitt Romney's 2012 campaign, and from the 1968 campaign of George Romney, Mitt Romney's father, in Tampa, Florida January 24, 2012
#55 Oct. 3-Romney Tax Plan Needs Growth to Add Up: Reality Check; Mitt Romney, Republican presidential candidate, participates in a presidential debate with U.S. President Barack Obama, unseen, at the University of Denver in Denver, Colorado, on Wednesday, Oct. 3, 2012. Photographer: Andrew Harrer/Bloomberg