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

Republican presidential candidate Marco RubioMarco RubioRubio: 'I hope' Mexican elections won't end partnership against cartels Election hacking fears turn heat on Homeland Security Will Republicans stand up to the NRA's insurrection rhetoric? 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 CruzTed CruzFive takeaways from the CBO score on Senate ObamaCare bill Overnight Healthcare: CBO score imperils ObamaCare repeal | Breaking down the numbers | WH hits back over score | Trump phones holdouts | Dems plan floor protest New CBO analysis imperils GOP ObamaCare repeal MORE by a very narrow margin. Rival Donald TrumpDonald TrumpTrump sends FBI director nomination to the Senate Alec Baldwin's Trump will return to SNL Carter Page questioned in FBI Russia investigation: report MORE won the primary. During his speech Saturday night, Rubio said Republicans now have a three-person race.