Republican presidential candidate Chris Christie poses for a portrait at the Des Moines Register studio on Friday, Jan. 15, 2016, in Des Moines.
Democratic presidential candidate Bernie Sanders poses for a portrait in The Des Moines Register studio on Thursday, December 31, 2015 in Des Moines.
Republican presidential candidate Jeb Bush poses for a portrait at the Des Moines Register Studio on Tuesday, Jan. 12, 2016, in Des Moines.
Republican presidential candidate Rick Santorum in the Des Moines Register Studio on Tuesday, December 08, 2015 in Des Moines.
Republican presidential hopeful Donald Trump at the Iowa State Fair on Saturday, August 15, 2015.
Republican presidential candidate Mike Huckabee speaks during the Faith and Freedom Coalition Dinner at the Iowa State Fairgrounds in Des Moines on Saturday, September 19, 2015.
Democratic presidential candidate Hillary Clinton waves to supporters during a rally before the historic Iowa Democratic Party's annual Jefferson-Jackson Dinner in Downtown Des Moines on Saturday, October 24, 2015.
Republican presidential candidate Mike Huckabee talks to people during a campaign stop at Sam's Soda and Sandwiches on Friday, October 30, 2015 in Carroll, Iowa.
Iowa native and now Virginia resident Jim Wilson lights a pipe outside of an event for republican presidential candidate Marco Rubio at Wellman's Pub on Wednesday, Jan. 27, 2016, in West Des Moines.
Republican presidential candidate Ted Cruz takes aim at a pheasant during the Col. Bud Day Pheasant Hunt at The Hole N the Wall Lodge on Saturday, October 31, 2015 in Akron, Iowa.
Colleen Kinney of Des Moines drops a cotton ball in her favorite candidate's jar inside the Theatrical shop after republican presidential candidate Mike Huckabee held a campaign event down the street at Inspired Grounds coffee on Sunday, Jan. 31, 2016, in West Des Moines.
A supporter buys a yard sign after a rally for Republican Vice Presidential nominee Mike Pence on Thursday, Nov. 3, 2016 in Prole.
Elder Sylvester Simmons of Waterloo, left, prays for Republican presidential candidate Rand Paul, right, with Hairport barbershop owner Trent Keller, center right, and Herlie Johnson, 37 of Waterloo, center left, during a campaign stop at the Hairport Barber shop on Saturday, December 05, 2015 in Waterloo.
Republican presidential candidate Ted Cruz greets supporters on stage during his caucus night watch party inside the Elwell Family Food Center at the Fairgrounds on Monday, Feb. 01, 2016, in Des Moines.
Gene Reasoner of Des Moines drops to his knees as results come in during the election night party for the Republican Party of Iowa at the Marriott on Wednesday, Nov. 9, 2016 in downtown Des Moines.
People listen as 2020 Democratic presidential candidate and former Texas Representative Beto O'Rourke stands onto a stump to give his speech in Marshalltown at the Mowry Irvine Mansion during a swing though Iowa on Friday, April 5, 2019, in Marshalltown.
During a walking tour of the East Village, Sen. Kirsten Gillibrand of New York stops at Scenic Route bakery to talk to voters on Saturday, Jan. 19, 2019, in Des Moines.
Vermont Senator and 2020 Democratic presidential candidate Bernie Sanders laughs at a response as he talks to kids at the Union County Democrats booth during the Union County fair on Saturday, July 20, 2019, in Afton.
President Donald Trump speaks during a Make America Great Again rally at JQH Arena on the campus of Missouri State University on Friday, Sept. 21, 2018 in Springfield.
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