But besides being the first state to vote, it has taken on additional importance this year: Trump's rivals have seen the state as a key opportunity to prevent him from gaining momentum and running away with the rest of the 2024 primary.
The Iowa winner has not always gone on to win the GOP presidential nomination. His weakest groups are among likely GOP caucusgoers who hold college degrees (that group gave him 39% support), independents (36%) and suburban residents (36%), but the former president still leads his rivals among those groups - albeit by narrower margins.
Trump gets first-choice support from majorities of evangelical Christians (51% of them backed him), self-identified Republicans (59%), first-time caucusgoers (63%) and white men without college degrees (66%).
