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

Republican presidential candidate Marco RubioMarco Antonio RubioTrump must send Russia powerful message through tougher actions McCain, Coons immigration bill sparks Trump backlash Taking a strong stance to protect election integrity 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 CruzSasse statement: Trump nominee who spread conspiracy theories has a ‘tinfoil hat’ Coalition of 44 groups calls for passage of drug pricing bill For the sake of our democracy, politicians must stop bickering MORE by a very narrow margin. Rival Donald TrumpDonald John TrumpTillerson: Russia already looking to interfere in 2018 midterms Dems pick up deep-red legislative seat in Missouri Speier on Trump's desire for military parade: 'We have a Napoleon in the making' MORE won the primary. During his speech Saturday night, Rubio said Republicans now have a three-person race.