Democrats campaign in Iowa ahead of caucus(14 images)

The Democratic primary to determine who will challenge GOP President Donald Trump in the November election takes a big step forward with the Iowa Caucus on Monday. It is the first caucus in the nation, so among the first opportunities for voters to show their support for a favorite. Get a rundown of who's in the race here.

2020 Democratic presidential candidates, from left to right, Tom Steyer, Sen. Elizabeth Warren, former Vice President Joe Biden, Sen. Bernie Sanders, former Mayor Pete Buttigieg and Sen. Amy Klobuchar gather onstage for a debate in Des Moines, Iowa, on January 14. Photo by Mike Theiler/UPI | License Photo
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