Sarah Palin Endorses Donald Trump for President

The Republican front-runner proudly unveiled the endorsement from the reality star at an Iowa rally.
3:36 | 01/20/16

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Transcript for Sarah Palin Endorses Donald Trump for President
And we begin with the bombshell endorsement on the campaign trail. No matter where you stand on Sarah Palin, she is a force among conservative voters, and tonight, she's about to take the stage, right there in Iowa, a short time from now, in fact, moments ago, she declared she is, quote, proud to endorse Donald J. Trump, throwing her conservative kcredentials behind the republican front-runner. It comes chess ts less than two weeks before the crucial state of Iowa. So, what now of Ted Cruz? ABC's Tom llamas is at the event in Iowa, and he leads us off live tonight. Tom? Reporter: David, good evening. At any moment, we are expecting Donald Trump to walk out with Sarah Palin. There is a lot of excitement in this room, surrounding this announcement. The candidate who has surprised us throughout the campaign trail surprises us yet again. Tonight, Sarah Palin is back, shaking up the republican race with just 13 days to go before the Iowa caucuses, declaring, "I am proud to endorse Donald J. Trump for president of the United States. "Crisscrossing Iowa today, shaking hands, trump building the hype, promising a mystery guest tonight, refusing to confirm who it would be. I'm a big fan of Sarah Palin, but I'm not saying who it is. Reporter: The two former reality show stars have been close for years. Palin sitting down for New York pizza in 2011 as she pondered her own run for the white house. How about a trump/palin ticket? That sounds exciting! Reporter: Trump recently appearing on Palin's talk show, where she sang his praises. This is a movement. The trumpeters. The trumpservatives. These are what these folks are called. Everything about Donald Trump's campaign, it's avant-garde and he is crushing it in the polls. Reporter: Her endorsement now coming at a pivotal point for trump, as senator Ted Cruz and others attack his, quote, new York values. Mr. Trump, both rush Limbaugh and senator Ted Cruz are warning voters you are may not be real conservative. What do you say to that? Well, I am a real conservative, and rush has been terrific to me. Reporter: Now trump is counting on Palin to rally republican skeptics, especially key evangelical voters. Trump's big win today, a big blow to Cruz. When he ran for senate, Palin was one of his biggest supporters. You know what, she can pick winners. Let me tell you something. I would not be in the U.S. Senate today, if it were not for governor Sarah Palin. Reporter: In New Hampshire today, Cruz trying not to sound disappointed. Regardless of what Sarah decides to do in 2016, I will always remain a big, big fans of Sarah Palin's. Reporter: But his bad day was about to get worse. Another surprise announcement -- Iowa's republican governor, terry Branstad, declaring he wants Cruz to lose the caucuses. I believe it would be a big mistake for Iowa to support him. And I know he's ahead in the polls, but the only poll that counts is the one they take on caucus night. And Tom llamas back with us now live as we look at live pictures from Iowa. Donald Trump on the scene. Sarah Palin expected to follow shortly. And Tom, the big question, is Palin expected to hit the campaign trail for trump? Reporter: She will, David. We know that she'll be campaigning with Donald Trump tomorrow here in Iowa. And then both of them fly together to Tulsa, Oklahoma. In the past, Sarah Palin has worked very hard for the candidate she's endorsed. Now, that said, a Palin endorsement sometimes comes with drama and there's no difference right now. Just last night, we learned that Sarah Palin's 26-year-old son, track Palin, was arrested in a domestic violence incident. So far, no word yet from the Palin or trump camps. David? Tom llamas, thank you. Meantime, on the democratic side tonight, a breaking

This transcript has been automatically generated and may not be 100% accurate.

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