Trump doubled his voting base in Iowa. Here’s who voted for him

Iowa Republicans showed up on 15 January in force for Donald Trump, voting overwhelmingly in the nation’s first primary for the former president, whose grip on his party has only deepened as he weathers numerous lawsuits and 91 felony charges relating to his business dealings and involvement in attempts to overturn the 2020 election. The Iowa caucuses confirmed polls that have consistently shown Trump carrying a comfortable lead ahead of the remaining Republican challengers.

Before the caucuses, the Florida governor, Ron DeSantis, repeatedly reminded voters and the press that he had toured all of Iowa’s 99 counties. Trump won 98 of them. With the exception of college graduates and voters under 30, who for the most part caucused for DeSantis or the former South Carolina governor Nikki Haley, most other demographic groups reported strong support for Trump this year.

Even young Republican voters favored Trump slightly more strongly this year than in the 2016 Iowa caucuses: CNN entrance polls showed a modest 3% jump in caucus-goers under 30 who support Trump, while his share of supporters over the age of 30 nearly doubled across the board.

Since 2016, Trump has consolidated support among evangelical Christian voters, a key block in Iowa. Just over 20% of Trump’s Iowa supporters in 2016 self-reported as evangelicals or born-again Christians; evangelicals made up 53% of his supporters in 2024 Iowa polling.

Support for Trump among evangelical Christians can be chalked up to “transactional politics” said Anne Nelson, author of Shadow Network: Media, Money, and the Secret Hub of the Radical Right.

Their support may be puzzling on the surface – Trump, a philandering and corrupt adulterer twice divorced who is not particularly