A new poll finds that Republican presidential candidate Ben Carson is gaining on Donald Trump in Iowa.
The Des Moines Register and Bloomberg Politics released the results of their survey Saturday.
They found that Trump has the support of 23 percent of likely Republican caucus-goers in Iowa, while Carson is at 18 percent.
But the poll has a margin of error of 4.9 percent.
Pollsters interviewed 400 registered Iowa voters who said they would definitely or probably attend the 2016 Republican Caucuses.
