Trump's anti-Latino vitriol — and the media's outraged fascination with it — helped propel him to the top of the polls.

But as summer turned to fall, Trump slowly introduced a new villain into his campaign narrative: Muslims. They are coming to the US to commit terrorism as surely as Latinos were coming to the US to commit crime. By December, he was calling for an outright ban on Muslim immigration to the United States. Islamophobia is being more openly and violently expressed in 2015 than it has been for decades.

This poll, from the Public Religion Research Institute, shows a majority of Americans believe Islam is at odds with American values, up from 47 percent in 2011. Republicans are more anti-Islam than the average American: 83 percent of them think Muslims should be barred from the presidency.

And Trump supporters are more anti-Islam than the average Republican. A poll of Iowa Republicans found that 30 percent of Republicans, and 36 percent of Trump supporters, believed Islam should be banned outright in the United States.

Image credit: Public Religion Research Institute