Iowa Slider

Iowa Slider

Republican voters in Iowa have backed Mitt Romney in the first test of the U.S. presidential election season, by a margin of only 8 votes. More than 50 caucuses and primaries will be held across the United States. A strong showing in Iowa does not guara

Republican presidential candidate Mitt Romney hugs his wife Ann during a Caucus night rally in Des Moines, Iowa, Tuesday, Jan. 3, 2012. (AP)

Supporters of Rick Santorum compare Iowa caucus returns at the Republican presidential candidate's victory party. (AP)

Barb Hansen tallies votes during a caucus of precinct 42. (AP)