So here’s an easy way to game this type of poll:
Take the survey among only target voting populations in the west, where there are more Mormons.
Among east-coast Catholics I’ve known (eg, Italians in upstate NY), their support or tolerance of Mormons is nowhere near this - and isn’t above 50%, either. Matter of fact, their tolerance of anyone who isn’t Italian and Catholic was one of the reasons why I left the area 30 years ago.