Rep. Amash endorses Cruz
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Rep. Justin AmashJustin AmashSanders co-chair: Greenwald charges could cause 'chilling effect on journalism across the world' Trump rails against impeachment in speech to Texas farmers Overnight Defense: Foreign policy takes center stage at Democratic debate | House delivers impeachment articles to Senate | Dems vow to force new vote on Trump's border wall MORE (R-Mich.) is endorsing Ted CruzRafael (Ted) Edward CruzCruz scolds reporter who brought up his daughters Can Democrats flip the Texas House? Today's result will provide a clue Republicans show little enthusiasm for impeachment witness swap MORE, giving the GOP contender a potential boost with libertarian-leaning supporters.

Amash, a strong backer of Rand PaulRandal (Rand) Howard PaulTrump allies throw jabs at Bolton over book's claims Overnight Defense: White House threatens to veto House Iran bills | Dems 'frustrated' after Iran briefing | Lawmakers warn US, UK intel sharing at risk after Huawei decision Foreign Relations Democrats 'deeply frustrated' after Iran briefing MORE before he ended his campaign this month, acknowledged Cruz wasn't his first choice but said Tuesday that he could be an "ally" to libertarians.

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"It’s easy to withdraw from politics when the positions and priorities of the candidates do not precisely mirror our own," Amash wrote in an op-ed published by the Independent Journal.

"But we owe it to our beliefs to find constitutional conservative political allies who not only respect our philosophy but also fight for our views to be heard," he added.

"Ted is not a libertarian and doesn’t claim to be. But he is a principled defender of the Constitution, a brilliant strategist and debater who can defeat the Democratic nominee in the general election, and the only remaining candidate I trust to take on what he correctly calls the Washington Cartel."

Amash's endorsement also comes ahead of Tuesday's Nevada Republican caucuses. A recent poll showed Trump up double digits, with Marco RubioMarco Antonio RubioHillicon Valley: UK allows Huawei to build 5G in blow to Trump | Lawmakers warn decision threatens intel sharing | Work on privacy bill inches forward | Facebook restricts travel to China amid virus Lawmakers warn US, UK intel sharing at risk after Huawei decision GOP lawmaker: UK-Huawei deal could force US to 'reexamine' intelligence-sharing partnership MORE slightly ahead of Cruz for second place.

The House Freedom Caucus member suggested Cruz, a former Supreme Court clerk, could be an asset as Republicans prepare to fight President Obama over replacing the late Justice Antonin Scalia.

Cruz is battling Rubio and Trump after taking third in South Carolina. He's tried to win over Paul supporters, even as the Kentucky senator says he doesn't have plans to endorse in the race.