Ben Carson said Speaker Paul Ryan Paul Davis RyanKenosha will be a good bellwether in 2020 At indoor rally, Pence says election runs through Wisconsin Juan Williams: Breaking down the debates MORE (R-Wis.) doesn't have any better choice than to support 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 for president.

“I hope Speaker Ryan and many others begin to understand that and realize that we have to work together,” Carson said Friday on MSNBC’s “Morning Joe.”

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“You don’t have another choice,” he added. "You get behind the choice that you have, whether you like them or not, if in fact you’re a believer.”

Carson said that Trump, the presumptive GOP presidential nominee, will plead his case to Ryan and win the Speaker’s support heading into the general election.

“Absolutely — and he is doing something to make that happen,” he said when asked whether Trump should make overtures to Ryan.

Ryan on Thursday said he is “just not ready” to support Trump’s White House run.

Trump hit back later that evening, saying he has reservations about backing Ryan’s agenda in Congress.

Carson said Trump could alleviate some of his tensions with establishment Republicans by picking a running mate they like.

“It kind of makes sense that if you’re a political outsider that you would want to have someone in your administration who was very familiar with the inner workings of the party,” said Carson.

“You clearly need to know how things operate there,” he added. "That doesn’t mean you’re going to become an insider and do things like they have always done.”

Trump’s campaign on Wednesday announced that Carson is serving on a selection committee for finding Trump’s vice presidential pick.

Carson said Trump was not ruling out any possibilities, noting that the billionaire was even open to Democrats.

“If there was a Democrat who strongly upheld the Constitution, believed in personal responsibility, a hand up rather than a hand-out, fiscal responsibility and a strong military, we’d be willing to talk to them. If you know of any such Democrats, let me know."