Winterset, Iowa—Republican presidential candidate Donald Trump speaks at the John Wayne Birthplace Museum on January 19, the same day he picked up the endorsement of former Alaska Governor and former vice presidential candidate Sarah Palin. On the Democratic side, Bernie Sanders enjoyed a surge in the polls over Hillary Clinton, whom he recently criticized for accepting hundreds of thousands of dollars in speaking fees from financial juggernaut Goldman Sachs. Apparently concerned by the prospect of a race between Trump and Sanders, former New York City Mayor Michael Bloomberg reportedly was considering jumping in as a third-party candidate.Launch Slideshow 4 PHOTOS
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