Former Vice President Joe Biden, a Democratic presidential hopeful, takes questions from local media backstage during a bus tour stop at the Usher’s Ferry lodge in Cedar Rapids, Iowa, Friday.
California Sen. Kamala Harris, a Democratic presidential hopeful, is introduced by Iowa State Rep. Phyllis Thede during a town hall at the Waterfront Convention Center in Bettendorf, Iowa, Sunday.
Sen. Cory Booker kneels alongside an attendee sitting in the back row just before he's introduced during a campaign event at the RiverCenter in Davenport, Iowa, Sunday.
Marc Kover of Washington, Iowa, stands outside of the RED Berry Café in Muscatine, Iowa, with a sign in support of Sen. Kirsten Gillibrand after seeing her speak, Wednesday. Kover is a registered republican who is says he'll consider supporting a Democratic candidate.
Democratic presidential candidate Sen. Bernie Sanders takes his podium during the Caucus Concert event in Cedar Rapids, Iowa, Saturday.
Saoirse Hermann-Wickham, 9, of West Liberty holds a sign in support of Democratic presidential candidate Sen. Elizabeth Warren while dressed as Lady Liberty at the precinct two caucus site at the community center in West Liberty, Iowa, Monday.
Pieter Breitner of Coralville sits in the front row while waiting to hear Sen. Elizabeth Warren speak during a town hall at the Iowa Memorial Union in Iowa City, Iowa, Monday.
Democratic presidential candidate and entrepreneur Andrew Yang stands behind the crowd as he’s introduced by his wife, Evelyn Yang, during a campaign event at Cafe Dodici in Washington, Iowa, Sunday.
Lila MacInnis-Baumert, 9, of Iowa City holds up a sign she made earlier in the morning at the kitchen table while waiting to be let in the room to see Democratic presidential candidate former Vice President Joe Biden speak during a community event at the Roosevelt Creative Corridor Business Academy in Cedar Rapids, Iowa, Saturday.
Democratic presidential candidate Sen. Cory Booker (D-N.J.) cheers to the crowd as he exits the stage after speaking during the Teamsters Presidential Candidate Forum at the Veterans Memorial Coliseum in Cedar Rapids, Iowa, Saturday.
South Bend Indiana mayor Pete Buttigeig reaches to turn off a fan after almost hitting his head while speaking during a meet and greet at Brew in the Village in Davenport, Iowa, Monday.
David Kutter of Cedar Rapids stands by his vehicle wearing a Joe Biden mask while waiting to hear former second lady Jill Biden speak during a drive-in rally at Kirkwood Community College in Cedar Rapids, Iowa, Saturday.
A playlist is seen playing before the arrival of U.S. Rep. Tulsi Gabbard of Hawaii, a Democratic presidential hopeful, at her Solon, Iowa, Coffee and Toffee House Party, Tuesday.
Democratic presidential candidate former U.S. Rep. John Delaney walks along Windsor Drive NE to knock on doors in Cedar Rapids, Iowa, Thursday. While walking down the street someone in the neighborhood yelled, “Trump 2020,” from afar to the candidate. Delaney simply shrugged upon realizing what the voice had yelled and moved on to the next house.
Keith Anthony Sikora of Los Angeles stands wearing a Sen. Bernie Sanders jumpsuit as he listens to Rep. Alexandria Ocasio-Cortez give a speech in support of the Sanders campaign at the Cedar Rapids, Iowa, field office on Saturday.
Seen from a detached garage, presidential hopeful Cory Booker speaks to gathered democrats at a backyard party in Muscatine, Iowa, Saturday.
Sara Sedlacek of West Liberty sits and listens to proceedings before deciding who to align with at the precinct two caucus site at the community center in West Liberty, Iowa, Monday.
Democratic Democratic presidential candidate Sen. Amy Klobuchar speaks during a town hall at Uptown Snug in Marion, Iowa, Sunday. candidate Sen. Amy Klobuchar speaks during a town hall at Uptown Snug in Marion, Iowa, Sunday.
Vietnam veteran Mike Martin of Davenport wipes a tear from his eye as Sen. Amy Klobuchar speaks about her experiences working with the late Sen. John McCain during a meet and greet at Hickory Garden Family Restaurant in Davenport, Iowa, Sunday.
President Donald Trump speaks to supporters at a campaign rally at the U.S. Cellular Center in Cedar Rapids, Iowa, Wednesday.
Leonard and Mary Ann Verdeck of Cedar Rapids sit waiting for Republican Party Presidential Nominee Donald Trump to arrive at the McGrath Amphitheater in Cedar Rapids, Iowa, Friday.
Former second lady Jill Biden waits on stage to speak during a drive-in rally at Kirkwood Community College in Cedar Rapids, Iowa, Saturday.