Glenn Beck says he may have misjudged Sen. Ted Cruz Rafael (Ted) Edward CruzThe Hill's Morning Report - Sponsored by Facebook - Washington on edge amid SCOTUS vacancy Murkowski: Supreme Court nominee should not be taken up before election Battle lines drawn on precedent in Supreme Court fight MORE (R-Texas).

ADVERTISEMENT

“For the very first time I heard Ted Cruz calculate,” Beck said about his interview with the Texas senator, where Cruz addressed his decision to endorse Republican presidential nominee Donald Trump Donald John TrumpBubba Wallace to be driver of Michael Jordan, Denny Hamlin NASCAR team Graham: GOP will confirm Trump's Supreme Court nominee before the election Southwest Airlines, unions call for six-month extension of government aid MORE, according to Business Insider.

“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.”

Beck, who was a Cruz supporter before the senator ended his presidential bid, said he should have considered supporting Sen. Marco Rubio Marco Antonio RubioMurky TikTok deal raises questions about China's role Sunday shows preview: Justice Ginsburg dies, sparking partisan battle over vacancy before election Florida senators pushing to keep Daylight Savings Time during pandemic MORE (R-Fla.) instead.

“I should have said, ‘You know who can win? You know who can beat Hillary Clinton Hillary Diane Rodham ClintonJoe Biden looks to expand election battleground into Trump country Biden leads Trump by 12 points among Catholic voters: poll The Hill's Campaign Report: Biden goes on offense MORE? Marco Rubio,'" Beck said.

"'I may disagree with him on the Gang of Eight [immigration bill], but there’s about 80 percent that I do agree with him on, and he’s kind of a politician, but he’s a different kind of politician. He's a Hispanic, he can win — let's go for it.’”

Beck said that for Cruz to "become the politician is disappointing."

"Really disappointing," Beck said.

"He’s still a good man, he’s just a politician first.”

Cruz last week endorsed Trump for president, a stunning reversal after he refused for months to back the GOP nominee.

In a Facebook post he put up on Friday, he called Democratic nominee Hillary Clinton "unfit" to be president and said Trump was "the only thing standing in her way."

Beck interviewed Cruz on Monday, asking him to explain his endorsement of a candidate he once called a "sociopathic liar."

“What I said is this is a binary choice,” Cruz said during the interview.

“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.”

Beck said the interview frustrated him.

"The interview pissed me off," he said. "That was so calculated that it was stunning to me."

Last week, Beck said Cruz backing Trump was "profoundly sad."

"Disappointment does not begin to describe," Beck wrote in a Facebook post.