Maps: A look at Iowa caucus results since 2000
The first test of the 2024 presidential election was in Iowa on Jan. 15.
That's when Republicans met to decide their preferred candidate for president, following the tradition of small local gatherings where neighbors and strangers can stand up to show their support for a particular candidate and persuade others to join them. They overwhelmingly picked former president Donald Trump.
See the statewide and county-by-county 2024 Iowa Republican caucus results.
Iowa Democrats still held caucuses to conduct party business that night, but its presidential nominating contest became a preference vote conducted by mail with results released on Super Tuesday.
How often has the Hawkeye State predicted the party’s eventual nominee? Iowa has a spotty record at picking the president, particularly for Republicans.
Check out the interactive maps below to see a county-by-county look at results for the past six caucuses.
Do the winners usually win the party's nomination?
Not necessarily. In 2020, Biden didn’t win either Iowa or New Hampshire, but his campaign got a reset in South Carolina, and he went on to the Democratic nomination and the White House.
In 2016, Donald Trump lost Iowa but won New Hampshire, similar to fellow Republican Mitt Romney in 2012.
In 2008, Democrat Barack Obama won Iowa but lost New Hampshire. Republican John McCain lost Iowa that year but won New Hampshire.
The last candidate to win both in Iowa and New Hampshire and go on to the White House was Democrat Jimmy Carter in 1976, although he technically placed second in Iowa, behind “uncommitted.”