Graham: GOP is at risk of breaking apart
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Sen. Lindsey GrahamLindsey Olin GrahamDurbin: I had 'nothing to do' with Curbelo snub Republicans jockey for position on immigration Overnight Health Care: House passes 20-week abortion ban | GOP gives ground over ObamaCare fix | Price exit sets off speculation over replacement MORE (R-S.C.) warned on Sunday that Republican presidential front-runner Donald TrumpDonald John TrumpIvanka Trump pens op-ed on kindergartners learning tech Bharara, Yates tamp down expectations Mueller will bring criminal charges Overnight Cybersecurity: Equifax security employee left after breach | Lawmakers float bill to reform warrantless surveillance | Intel leaders keeping collusion probe open MORE is putting the party at risk of breaking apart.

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In a radio interview with John Catsimatidis, the former presidential candidate explained his reasoning for backing Texas Sen. Ted CruzRafael (Ted) Edward CruzWhatever you think the Alabama special election means, you’re probably wrong This week: Congress gets ball rolling on tax reform Week ahead: Senators work toward deal to fix ObamaCare markets MORE, someone he has butted heads with in the past.

“I’m supporting Cruz because I think he is a reliable conservative; I think the election will be much more competitive with Ted Cruz,” he said. “The people of New York voted overwhelmingly for Donald Trump in the Republican primary — I respect that.

“I have never been more worried about the Republican Party breaking apart than I am today.”

Graham said the silver lining of Trump’s rise is that it means people are tired of “big-government liberalism.”

“What we have to do as Republicans is offer an alternative that’s common sense, that people can understand, that’s hopeful and optimistic, not hateful," he said. "I pray the Republican Party can nominate somebody that can beat [Democratic presidential front-runner] Hillary ClintonHillary Diane Rodham ClintonChris Murphy’s profile rises with gun tragedies DNC, RNC step up cyber protections Gun proposal picks up GOP support MORE, because if she wins we’re going to have a third term of Barack ObamaBarack Hussein ObamaGeorge W. Bush honors father at benefit for hurricane victims Dem senator: ‘I miss every one of’ our last 5 presidents All five living former presidents appear at hurricane relief benefit concert MORE.”