Trump's big Iowa win included some signs of trouble with moderates, younger voters

Here's a closer look at what happened in Iowa's caucuses and what's next for Trump

Monday was a big night for former President Donald Trump: He won a clear victory in the Iowa Republican caucuses -- the first chance voters had in the 2024 race to register how much (or how little) they supported him over rivals like Ron DeSantis and Nikki Haley.

But beyond the headline of Trump's 51% win, there were more insights in the results.

Here's a closer look at what happened in Iowa and what's next for Trump.

An analysis of entrance polls of the caucusgoers on Monday showed the various Republican groups with whom Trump excels -- as well as the areas in the electorate where he is relatively weaker.

He won big with caucusgoers ages 45 and older (56% support), those without a college degree (67%) and Republicans (54%), conservative voters (55%) and "very" conservative voters (51%) as well as 53% of white evangelical Christians, according to the entrance poll analysis, produced by Langer Research Associates for ABC News.