Romney rivals split on whether to ever back him

Republican presidential candidates, former Pennsylvania Sen. Rick Santorum, former Massachusetts Gov. Mitt Romney, former House Speaker Newt Gingrich and Rep. Ron Paul, R-Texas, take the stage before the start of the Republican presidential candidate debate at the North Charleston Coliseum in Charleston, S.C., Thursday, Jan. 19, 2012. (AP Photo/Matt Rourke)

April 1, 2012 1:21:29 PM PDT
Mitt Romney's rivals are split on whether they would ever embrace the GOP presidential front-runner if he were the party's nominee.