The outcome of the Iowa caucuses can change presidential races.<br />Since 1972, the Iowa caucuses have been the first time Americans vote for a potential president.<br />The winner gets a spurt of momentum and media attention.<br />However, the majority of winners have gone on to lose the Presidency.<br />In 2016, Ted Cruz won in Iowa only to lose the nomination to Donald Trump.<br />In 2012, Rick Santorum won the Iowa caucus. Mitt Romney later won the nomination.<br />In 2008, Mike Huckabee won the Iowa caucus.