Sarah Palin, former governor of Alaska, left, speaks as Donald Trump, president and chief executive of Trump Organization Inc. and 2016 Republican presidential candidate, listens during a campaign rally at the Hansen Agricultural Student Learning Center at Iowa State University in Ames, Iowa, U.S., on Tuesday, Jan. 19, 2016. Trump's campaign to win the Iowa caucuses in less than two weeks received a boost from a Tea Party favorite, Sarah Palin. Photographer: Cassi Alexandra/Bloomberg via Getty Images
