Rep. Amash endorses Cruz
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Rep. Justin AmashJustin AmashBiden: 'Prince Philip gladly dedicated himself to the people of the UK' Battle rages over vaccine passports Republicans eye primaries in impeachment vote MORE (R-Mich.) is endorsing Ted CruzRafael (Ted) Edward CruzBoehner: Trump 'stepped all over their loyalty' by lying to followers The Memo: Biden's five biggest foreign policy challenges Boehner finally calls it as he sees it MORE, giving the GOP contender a potential boost with libertarian-leaning supporters.

Amash, a strong backer of Rand PaulRandal (Rand) Howard PaulAlarm grows over impact of states banning trans youth treatment The Hill's 12:30 Report - Presented by ExxonMobil - World mourns the death of Prince Philip The Hill's Morning Report - Biden assails 'epidemic' of gun violence amid SC, Texas shootings 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 RubioThe Memo: Biden's five biggest foreign policy challenges Hillicon Valley: Amazon wins union election — says 'our employees made the choice' Overnight Defense: Biden proposes 3B defense budget | Criticism comes in from left and right | Pentagon moves toward new screening for extremists 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.