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Republican presidential candidate Donald Trump looks on as former Alaska Gov. Sarah Palin speaks at Hansen Agriculture Student Learning Center at Iowa State University on January 19, 2016 in Ames, IA.
Republican presidential candidate Donald Trump looks on as former Alaska Gov. Sarah Palin speaks at Hansen Agriculture Student Learning Center at Iowa State University on January 19, 2016 in Ames, IA.

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    Has Sarah Palin backed a winner in Trump?

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Has Sarah Palin backed a winner in Trump?

As Sarah Palin throws her support behind Donald Trump, CNN's Jake Tapper looks at the former Alaska governor's record of picking winners.

Has Sarah Palin backed a winner in Trump?

As Sarah Palin throws her support behind Donald Trump, CNN's Jake Tapper looks at the former Alaska governor's record of picking winners.