Donald Trump Donald John TrumpObama calls on Senate not to fill Ginsburg's vacancy until after election Planned Parenthood: 'The fate of our rights' depends on Ginsburg replacement Progressive group to spend M in ad campaign on Supreme Court vacancy MORE on Thursday said that he would welcome Sen. Marco Rubio Marco Antonio RubioFlorida senators pushing to keep Daylight Savings Time during pandemic Hillicon Valley: DOJ indicts Chinese, Malaysian hackers accused of targeting over 100 organizations | GOP senators raise concerns over Oracle-TikTok deal | QAnon awareness jumps in new poll Intelligence chief says Congress will get some in-person election security briefings MORE (R-Fla.) into his presidential Cabinet.

“Frankly, Marco I'd love to have involved,” the GOP presidential front-runner said on Fox News’s “Hannity.”

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“I can tell you that Ben Carson is a terrific guy,” Trump said, listing other options from the original GOP contenders this cycle. "Chris Christie is a fantastic guy. Both of them are tremendous people.

“The party has to unite. If we unite, this party is going to have a huge victory. We are going to win places other people have no chance of winning.”

The comments from Trump come amid some new speculation about who could be the party's vice presidential candidate. Trump is trying to clinch the GOP nomination before this summer's convention, but it is not clear he will reach 1,237 delegatesnecessary to do so. If he doesn't, the vote could go to a second or third ballot, and there could also be negotiating on the floor over who the VP candiate should be.

Trump has previously suggested he could consider Rubio, Wisconsin Gov. Scott Walker or Ohio Gov. John Kasich — who is still a presidential candidate — as his pick.

Rubio suspended his own White House run last month after finishing second in his home state’s Republican presidential primary. He and Trump sparred memorably during the campaign, with Rubio at one point mocking the GOP front-runner over his "small hands."

Trump coined the name "Little Marco" to refer to Rubio.

Ted Cruz Rafael (Ted) Edward CruzSenate Republicans face tough decision on replacing Ginsburg Cruz: Trump should nominate a Supreme Court justice next week Renewed focus on Trump's Supreme Court list after Ginsburg's death MORE has also floated Rubio as a potential running mate, saying he'd "be a fool" to not consider him for his VP.

Christie and Carson, meanwhile, have each endorsed Trump after exiting the Oval Office race earlier this year.

Trump on Thursday said that his remaining GOP presidential primary rivals should give up hope of beating him.

“I was competing against 16 people in the beginning. Even now we have three people,” he said, referencing Cruz and Kasich. "We should be having just one. They should both drop out. Cruz has no path. He’s been mathematically eliminated.”

The Associated Press on Wednesday reported that Cruz is mathematically eliminated from winning the Republican presidential nomination on the first ballot.

Trump leads with 845 delegates to Cruz’s 559 and Kasich’s 148, according to the latest RealClearPolitics delegate count.

He also has a nearly 10-point edge over the Republican presidential field nationwide, according to RCP's latest average of polls.