Iowa's first-in-the-nation caucuses kick off the U.S. primary election season Monday, Feb. 1, 2016.
Iowa Set To Kick Off US Primary Election Process

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Looking west from the Iowa State Capitol steps shows a view of downtown Des Moines. Iowa's first-in-the-nation caucuses kick off the U.S. primary election season Monday.

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Visitors on boats enjoy Someiyoshino cherry blossoms at Chitorigafuchi Imperial Palace moat in Tokyo.

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Joe Enriquez Henry with the League of United Latin American Citizens goes door-to-door to urge people to vote in Des Moines, Iowa. Iowa's first-in-the-nation caucuses kick off the U.S. primary election season Monday.

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The League of United Latin American Citizens, one of the oldest and largest Latino organizations in the United States, urges immigrants in the community to vote, in Des Moines, Iowa.