Rubio: GOP will coalesce around a candidate 'one way or another'
© Greg Nash

Republican presidential candidate Marco RubioMarco Antonio RubioStudents gather outside White House after walkout to protest gun violence Overnight Energy: Senate confirms Bridenstine as NASA chief | Watchdog probes Pruitt’s use of security detail | Emails shine light on EPA science policy changes Senate confirms Trump’s pick to lead NASA MORE refused to say on Sunday whether rivals John Kasich or Ben Carson should drop out of the race, but said he thinks the party will be more successful when it coalesces behind one candidate.

"I believe that the sooner we can coalesce, the better we're going to be as a party in general," he said on "Fox News Sunday."

"It's going to happen one way or another. There's a natural process that's going to take hold."

Rubio said the other candidates in the race have been in it for a long time and have been working hard, adding that they have the right to decide their futures themselves.

Rubio said he thinks the question is the timing. Kasich is going to focus "entirely" on Michigan, Rubio said, while his campaign will continue to work all across the country. Rubio added that he's hitting three different states on Sunday.

"We're going to compete everywhere. We feel good about that coalescing happening in all those places where these other candidates are not."

Rubio came in second place in the South Carolina Republican primary on Saturday, edging out Ted CruzRafael (Ted) Edward CruzCruz's Dem challenger slams Time piece praising Trump Race for Republican Speaker rare chance to unify party for election 32 male senators back Senate women's calls to change harassment rules MORE by a very narrow margin. Rival Donald TrumpDonald John TrumpIG investigating Comey memos over classified information: report Overnight Defense: Congress poised for busy week on nominations, defense bill | Trump to deliver Naval Academy commencement speech | Trump administration appeals decision to block suspected combatant's transfer Top Pruitt aid requested backdate to resignation letter: report MORE won the primary. During his speech Saturday night, Rubio said Republicans now have a three-person race.