The Associated Press declared Trump the winner of the Iowa caucuses based on an analysis of early returns as well as results of AP VoteCast, a survey of voters who planned to caucus on Monday night. Both showed Trump with an insurmountable lead.

Initial results from eight counties showed Trump with far more than half of the total votes counted as of 8:31 pm. ET, with the rest of the field trailing far behind. These counties include rural areas that are demographically and politically similar to a large number of counties that have yet to report.

AP VoteCast also shows Trump with sizable leads among both men and women, as well as every age group and geographic regions throughout the state.

AP VoteCast is a survey conducted by the AP-NORC Center for Public Affairs Research of more than 1,500 voters who said they planned to take part in Monday’s Republican caucuses in Iowa.

Among voters who identify as born-again Christians, the survey found that Trump was favored by 58% voters intending to caucus, compared to 18% for DeSantis and 13% for Nikki Haley. Polls showed that was a relatively weak group of backers for Trump in Iowa in 2016.

So far, Trump is significantly outperforming his second-place 2016 caucus finish, when he received 24% of the vote, compared to 28% for Ted Cruz.