Kandidatët republikanë gjatë fushatës për Super të Martën

Mitt Romney and his wife Ann brought babies from the audience on stage at a campaign rally in Knoxville, Tennessee, March 5, 2012. (Reuters)

Senator Rick Santorum hugs a supporter at a rally in Cuyahoga Falls, Ohio, March 5, 2012. (Reuters)

Former presidential candidate Herman Cain speaks on behalf of Newt Gingrich at a campaign stop in Chattanooga, Tennessee, March 5, 2012. (AP)

Ron Paul checks his watch as he tours the Quest Aircraft Company in Sandpoint, Idaho, March 5, 2012. (AP)

Mary Lou Andrews fills out a voter certification card at Medlock Bridge Elementary School in Johns Creek, Georgia, to vote in the Republican primary, on Super Tuesday, March 6, 2012. (AP)

Mitt Romney tours Gregory Industries with the company's Executive Vice President Matt Gregory (L) and U.S. Senator Rob Portman in Canton, Ohio March 5, 2012. (Reuters)

Rick Santorum waits backstage before speaking at the American Legion in Westerville, Ohio, March 5, 2012. (AP)

Supporters of Mitt Romney hold signs outside his town hall meeting in Youngstown, Ohio, March 5, 2012. (AP)

Mitt Romney speaking at his town hall meeting at Taylor Winfield in Youngstown, Ohio, March 5, 2012. (AP)

Newt Gingrich arrives for a campaign stop at Food City in Kingsport, Tennessee, March 5, 2012. (AP)

Ron Paul signs an autograph after a town hall meeting in Sandpoint, Idaho, March 5, 2012. (AP)

Supporters of Rick Santorum pray before the start of a rally at Dayton Christian School in Miamisburg, Ohio March 5, 2012. (Reuters)

Rick Santorum greets supporters at a rally in Cuyahoga Falls, Ohio, March 5, 2012. (Reuters)

Four contenders remain in the Republican nomination race, but Super Tuesday could narrow the field as 10 states hold presidential primary or caucus votes, with a total of 419 Republican delegates at stake.