According to Breitbart:
The trusting attitude towards Islam is revealed in the February 2017 poll follows 17 tumultuous years of attacks against Americans motivated or shaped by Islamic ideology throughout the United States—from the 9/11 atrocity to the Pulse nightclub attack in Florida committed by an observant, orthodox Muslim man from a Muslim family.
Merely one-in-seven Democrats believe that Islam is more violent than other religions, such as Christianity, Mormonism, Judaism, and Buddhism. One-in-ten Democrats believe that Islam is less violent that other religions, according to the poll of 1,019 adults, which was taken Feb. 1 and Feb. 2.
In contrast, Republicans have a far colder view of Islam. Sixty-three percent of Republicans view Islam as aggressive compared to other religions, and only two percent view Islam as more pacific than other faiths.