Huge numbers of Iowans lined up to participate in the caucuses, the first event which actually counts in the nominating contest to be the next president of the United States.
Ben Carson was once leading in the polls, but faded after a series of poor performances at the debates.
His campaign has already announced, he's stopping at his home in Florida before heading to New Hampshire, which holds it's primary next week.
He made his final pitch to conservative Christian voters in Clive, Iowa.
IN: "And we need....
OUT: ...thank you very much (Applause fade)"
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