Glenn Beck mercilessly grills Ted Cruz over Donald Trump endorsement: 'Why now? What's new?'

Glenn Beck on Monday grilled Ted Cruz for his Friday endorsement of Donald Trump, asking the Texas senator to explain how he could vote for a man he once called a "sociopathic liar."

Cruz repeatedly told Beck there are only two choices for president this November: Trump or Hillary Clinton, the Democratic nominee.

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"What I said is this is a binary choice," he said. "I wish it were not a binary choice. As you know, I tried very very hard, as did you, to prevent it from being a binary choice between Hillary and Donald Trump."

"I am still encouraged by you to abandon my principles and vote because it's a binary choice?" Beck quipped back.

"You are encouraged by me to do what you believe is right and honorable and principled," Cruz said.

Listen below:

Beck pressed the former 2016 presidential hopeful, asking him what changed between the "vote your conscience" speech he delivered at the GOP convention in Cleveland and now.

"This is information that you had in Cleveland. ... You had all this information. You had this information the day you dropped out of the race and said that Donald Trump is a 'sociopathic liar.' So you had all this information," Beck said.

He continued: "Have you spent an enormous amount of time — do you have new information that has made you say, 'Oh my gosh. He's now not a sociopathic liar? He's not the guy that I very eloquently spelled out for over a year. And now suddenly there's a reason to believe him?'

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Ted Cruz through the years, with family
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Ted Cruz through the years, with family
UNITED STATES - MARCH 21: Ted Cruz (R) Texas (Photo By Douglas Graham/Roll Call)
U.S. Senate candidate Ted Cruz arrives for a luncheon near the state Republican convention, Friday, June 8, 2012, in Fort Worth, Texas. (Ron T. Ennis/Fort Worth Star-Telegram/MCT via Getty Images)
U.S. Senate candidate candidate Ted Cruz and his wife, Heidi, wave to delegates after he spoke on the final day of the state Republican convention at the FWCC on Saturday, June 9, 2012, in Fort Worth, Texas. (Ron T. Ennis/Fort Worth Star-Telegram/MCT via Getty Images)
U.S. Senator Ted Cruz, a Republican from Texas, speaks at the Heritage Foundation in Washington, D.C., U.S., on Wednesday, Oct. 30, 2013. Cruz was scheduled to speak on the scope of treaty power in the U.S. Constitution. Photographer: Pete Marovich/Bloomberg via Getty Images
LYNCHBURG, VA - MARCH 23: Senator Ted Cruz (R-Texas) stands on stage his his daughter, Catherine Cruz, 4, left, his wife, Heidi Cruz, and his older sister, Caroline Cruz, 6, right, after he made a speech announcing his candidacy for a presidential bid at Liberty University on Monday March 23, 2015 in Lynchburg, VA.(Photo by Matt McClain/ The Washington Post via Getty Images)
Republican 2016 U.S. presidential candidate and U.S. Senator Ted Cruz sits on the edge of the stage with his young daughter Catherine during a commercial break at the first official Republican presidential candidates debate of the 2016 U.S. presidential campaign in Cleveland, Ohio, August 6, 2015. REUTERS/Brian Snyder
Republican presidential candidate Senator Ted Cruz (R-TX ) and his family acknowledge the crowd at Faith Baptist Bible College in Ankeny, Iowa, January 23, 2016. REUTERS/Aaron P. Bernstein TPX IMAGES OF THE DAY
U.S. Republican presidential candidate Ted Cruz (R-TX) appears with his daughters Caroline and Catherine at a campaign event at Zaharakos Ice Cream Shop in Columbus, Indiana, U.S., April 25, 2016. REUTERS/Aaron P. Bernstein TPX IMAGES OF THE DAY
Senator Ted Cruz, a Republican from Texas and former 2016 presidential candidate, takes the stage with his family during the 2016 Texas Republican Convention in Dallas, Texas, U.S., on Saturday, May 14, 2016. Paul Ryan made clear Thursday that he is sticking with his extraordinary gambit that he isn't ready to support the Republican nominee for president unless Donald Trump can demonstrate that he's Republican enough. Photographer: Laura Buckman/Bloomberg via Getty Images
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"You knew all the things you are saying today," Beck reiterated. "The time to do that would have been the day you pulled out, or the day you gave the speech so eloquently. Why now? What's new?"

Cruz said that "the most significant thing that changed" was the Supreme Court list Trump released on Friday, which added Utah Sen. Mike Lee, a Tea Party favorite.

"I think to me critically committed the only nominees he would consider for the court were on that list," he said. "Now that was a major shift."

Beck, running short on time, bumped a commercial break to ask Cruz if a Politico report that said he rented his email list out to Trump months before endorsing was accurate.

"Did you sell your list to Donald Trump?" Beck asked.

"Well Glenn, as you noted, you sell advertising. That's what actually funds your radio show and that's true, as far as I know, of every radio show. That's how one communicates," Cruz said.

The senator continued: "That's also true of every candidate. You don't sell your list, but you rent your list, so if someone wants to access your supporters, they pay for it. And that helps fund your effort. And like every other candidate, sure, we have rented our list out to those who wish to pay for it."

Cruz then took a swipe at Politico, calling the story Beck referenced a "hit piece" from a "left-wing rag."

Following the marathon grilling session, Beck said he was wrong about the man he thought Cruz was.

"For the for the very first time I heard Ted Cruz calculate," Beck said of his interview with Cruz. "And when that happened, the whole thing fell apart for me. And it's my fault. It's my fault for believing men can actually be George Washington. It's my fault."

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