Bombshell Endorsement: Sarah Palin Backs Donald Trump

The former Republican VP nominee endorsed Republican presidential front-runner Donald Trump in Iowa.
1:56 | 01/20/16

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Transcript for Bombshell Endorsement: Sarah Palin Backs Donald Trump
Tonight Sarah Palin announced that she will officially be jumping onboard the let's make a America great again campaign. Her endorsement getting mixed reviews but will this backing give Donald Trump the boost he needs in Iowa? I would like to bring up, if I might, governor Sarah Palin. Reporter: Tonight Donald Trump unveiling the newest feather in his campaign's cap. Thank you so much. So great to be in Iowa. An endorsement from former alaskan governor Sarah Palin. Are you ready to make America great again? Reporter: Heating up the republican race with just 13 days to go before the Iowa caucus. And Palin's not mincing words. You ready for a commander in chief who will let our warriors do their job and go kick Isis' ? Reporter: They are close for years, both former reality stars. Trump on "The apprentice" of course, and Palin on "Sarah Palin's Alaska." And she recently sang his praises on her talk show "On point with Sarah Palin." He is crushing it in the polls. Thank you. Reporter: The reaction in the room today glorious but not everyone is so pumped. The new yo"new York daily news" that will hit stands tomorrow. Endorsement likely disappointment for presidentialfulf Ted Cruz. Right wing and bitter clinging and proud clingers of Reporter: Right now it's difficult to predict how they will influence the race. Good evening, my fellow Americans. Reporter: But it seems increasingly likely that Tina fey and Amy Poehler will reprize those famous roles on St. Night live. And I was told I would be addressing you alone. Of course we will continue to follow this developing story tomorrow morning on "Gma."

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

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