In a poll conducted for Investor’s Business Daily last spring, 83 percent of respondents said they closely followed news stories about ISIS. And when those people were asked whether the group presented “a serious threat to the existence or survival of the US,” 77 percent agreed; more than two-thirds of them, strongly.
These numbers may be a bit inflated. The poll was conducted a week after ISIS claimed responsibility for the attack on the Brussels airport that killed 32 civilians. However, a question asked multiple times by CBS News and the New York Times (and catalogued by the Roper Center) after ISIS’s webcast beheadings of American hostages in 2014 and most recently in June 2016 found between 58 and 78 percent of those asked believed ISIS presented a major threat to U.S. security.