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?
The Lead
As Sarah Palin throws her support behind Donald Trump, CNN's Jake Tapper looks at the former Alaska governor's record of picking winners.
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Sarah Palin endorses Donald Trump 13 videos
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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Palin talks husband's crash and 'punk-ass' protesters
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INDIANOLA, IA - SEPTEMBER 03: Todd Palin looks on during the Tea Party of America's "Restoring America" event at the Indianola Balloon Festival Grounds on September 3, 2011 in Indianola, Iowa. Former Alaska governor Sarah Palin headlined the Tea Party of America's "Restoring America" event. (Photo by Justin Sullivan/Getty Images)
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Todd Palin injured in snow machine crash
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Todd Palin seriously injured in snowmobile accident
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Palin: Cruz mailer 'shamed' voters
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AMES, IA - JANUARY 19: 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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Trump-backing Palin comes out swinging against Cruz
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Sarah Palin: Respect our troops
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Where has Sarah Palin been since 2008?
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Palin blames 'weak-kneed' Obama for detained sailors
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Sarah Palin: Trump will 'kick ISIS' ass'
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Sarah Palin endorsement 'a coup' for Donald Trump
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NATIONAL HARBOR, MD - MARCH 08: Conservative pundit, television personality and former vice presidential candidate Sarah Palin speaks during the 41st annual Conservative Political Action Conference at the Gaylord International Hotel and Conference Center on March 8, 2014 in National Harbor, Maryland. The conference, a project of the American Conservative Union, brings together conservatives, polticians, pundits and voters for three days of speeches and workshops. (Photo by T.J. Kirkpatrick/Getty Images)
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Palin sides with Trump in face-off vs. RNC
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Meet the Tea Partiers at the Trump-Cruz-Palin rally
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