Trump, Haley and DeSantis make final pitches in Iowa
The Iowa caucuses are the first nominating contests of the 2024 presidential election, where Republicans and Democrats meet in person to select their preferred candidates.
Former President Donald Trump is expected to win the Republican caucus by a large margin, according to the latest polls.
He has the support of 48% of likely caucus-goers, followed by former South Carolina Governor Nikki Haley with 20%, and Florida Governor Ron DeSantis with 16%.
Haley and DeSantis are competing for the second place, which could boost their chances in the next states to vote, such as New Hampshire and South Carolina.
They have focused their late pitches on Iowa's suburban voters, who are more likely to be moderate and independent.
Trump has ramped up his attacks on Haley and DeSantis, accusing them of being disloyal and weak. He has also claimed that the election is rigged and that he is the only one who can defeat Democratic President Joe Biden.
The weather could be a factor in the turnout, as Iowa is facing record-setting cold and snow.
Caucus organizers have expressed concern that the harsh conditions could discourage some voters from participating.