Santorum tells Fox News Channel that one candidate shouldn't tell another "to get out of the race and get out of the way."
The former Pennsylvania senator was responding to remarks by Gingrich suggesting other conservatives need to coalesce around him to keep Mitt Romney from winning the party nomination.
Santorum says he thinks he's the better, more conservative candidate himself -- but that wouldn't justify asking Gingrich to quit. He says, "Everybody should run."
Santorum, who won a close victory in the Iowa caucuses, lags in the polls and has given up on Tuesday's Florida primary. He's moved on to other states including Colorado and Nevada.