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Ted Cruz greets supporters at his rally in Des Moines, Iowa on Jan. 31, 2016.Natalie Keyssar for TIME
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Natalie Keyssar for TIME
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Hillary Clinton campaigns with Bill Clinton in Davenport, Iowa, on Jan. 29, 2016.Natalie Keyssar for TIME
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Natalie Keyssar for TIME
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Bernie Sanders speaks during a campaign rally and concert in Iowa City, Iowa on Jan. 30, 2016.Natalie Keyssar for TIME
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Natalie Keyssar for TIME
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New Jersey Gov. Chris Christie speaks to supporters at a campaign town hall in Pella, Iowa, on Jan. 29.Natalie Keyssar for TIME
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Ben Carson speaks to supporters in Iowa City, Iowa, on Jan. 29.Natalie Keyssar for TIME
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Former Arkansas Gov. Mike Huckabee and his wife, Janet, campaign at the Crossroads shooting range in Johnston, Iowa on Jan. 30, 2016.Natalie Keyssar for TIME
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Martin O'Malley walks during a canvas launch at a supporter's home in Johnston, Iowa on Jan. 31.Natalie Keyssar for TIME
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Hillary Clinton speaks during a campaign rally in Davenport, Iowa, on Jan. 29, 2016.Natalie Keyssar for TIME
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Republican presidential candidate Marco Rubio appeared at a caucus event with his family on Feb. 1, 2016, at the 7 Flags Event Center in Clive, Iowa.Natalie Keyssar for TIME
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Donald Trump greets supporters at a rally in Des Moines, Iowa, on Jan. 26, 2016.Natalie Keyssar for TIME
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