Scenes from the 2020 Iowa Caucuses

Supporters hold up placards as Democratic presidential candidate Massachusetts Senator Elizabeth Warren speaks at a town hall in Davenport, Iowa, on Feb. 1, 2020.

Singer Bon Iver performs at a concert in support of Democratic presidential candidate Sen. Bernie Sanders in Clive, Iowa, Jan. 31, 2020. (K. Farabaugh/VOA)

Democratic presidential candidate Sen. Elizabeth Warren poses with supporters at a Super Bowl party at the Iowa Events Center in Des Moines, Iowa, Feb. 2, 2020. (K. Farabaugh/VOA)

Democratic presidential candidate Sen. Bernie Sanders speaks at an event at the Tavern Bar & Grill in West Des Moines, Iowa, Feb. 1, 2020. (K. Farabaugh/VOA)

Democratic 2020 U.S. presidential candidate and former Vice President Joe Biden buys ice-cream at a fast food restaurant in Pella, Iowa, Jan. 30, 2020.

A supporter is interviewed next to a stencil of Democratic presidential candidate former South Bend, Ind., Mayor Pete Buttigieg at a campaign office on the day of the Iowa Caucus, Feb. 3, 2020.

Democratic Presidential Candidate Senator from Minnesota Amy Klobuchar speaks to guests during a Super Bowl game party stop at a restaurant on February 2, 2020 in Johnston, Iowa. (Photo by kerem…

Democratic 2020 U.S. presidential candidate and former Vice President Joe Biden talks with volunteers and supporters as he visits a campaign office in Des Moines, Iowa, U.S., Feb. 3, 2020.

Attendees hold letters that read "CAUCUS" during a campaign event in South Bend, Indiana, Feb. 2, 2020.

Democratic presidential candidate Pete Buttigieg arrives to speak at a campaign office the day of the Iowa caucuses, Feb. 3, 2020, in West Des Moines, Iowa.

Caucusgoers check in at Roosevelt High School, Feb. 3, 2020, in Des Moines, Iowa.

Democratic presidential candidate Sen. Elizabeth Warren, D-Mass., speaks at a caucus at Roosevelt High School, Feb. 3, 2020, in Des Moines, Iowa.

A volunteer holds a presidential preference card before the start of a Democratic caucus at Hoover High School, Feb. 3, 2020, in Des Moines, Iowa.

Residents wait to enter an Iowa Democratic caucus at Hoover High School, Feb. 3, 2020, in Des Moines, Iowa.