Republicans opposed to Donald TrumpDonald John TrumpBiden says GOP senators have called to congratulate him Biden: Trump attending inauguration is 'of consequence' to the country Biden says family will avoid business conflicts MORE are unveiling a new ad comparing the presumptive GOP presidential nominee to Ronald Reagan as part of their push keep Trump from the nomination.

A group called Delegates Unbound is urging Republican delegates to reject Trump during next month's Republican National Convention on moral grounds, CNN reported Friday.

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The video contrasts clips of Reagan, the nation's 40th president, with Trump quotes.

“This national feeling is good,” Reagan is shown saying, before it cuts to a clip of Trump yelling, “I’d like to punch him in the face.”

It goes back to Reagan continuing, “but it won’t count for much, and it won’t last, unless it’s grounded in thoughtfulness and knowledge,” before showing Trump apparently mocking a disabled reporter by spasming wildly.

“It’s time to realize, I think, we need God more than he needs us,” Regan says in another flashback.

“I don’t bring God into that picture,” Trump is shown saying in response.

After a clip of Reagan saying “use of force is always and only a last resort,” Trump is shown shouting, “I would bomb the shit out of them.”

The commercial ends with text stating, “GOP delegates: Choose your values. Follow your conscience.”

The commercial marks Delegates Unbound’s television debut, and it will air Sunday to Tuesday nationwide. Delegates Unbound is running the ad on cable networks it believes will reach more delegates.

CNN said the group is run by veteran GOP operatives including Eric O’Keefe and M. Dane Waters.

O’Keefe is a former top fundraiser for Sen. Ted CruzRafael (Ted) Edward CruzSenate committee approves nominations of three FEC commissioners Cruz urges Supreme Court to take up Pennsylvania election challenge OVERNIGHT ENERGY: Trump administration proceeds with rollback of bird protections despite objections | Trump banking proposal on fossil fuels sparks backlash from libertarians | EU 2019 greenhouse gas emissions down 24 percent MORE (R-Texas), who ran unsuccessfully for the Republican presidential nomination this year, while Waters is a longtime Republican strategist.

Waters has previously said the group plans to spend between $2.5 million and $3.5 million total on anti-Trump ads.

Delegates Unbound is just one of several groups trying to prevent Trump’s likely nomination in July.

Another organization on Friday requested a rule change from the Republican National Convention that would let delegates vote their “conscience” rather than remain bound to any particular candidate.