The answer seems to be yes, unfortunately, but the results are somewhat encouraging.
Eighteen percent of Americans say they would not vote for a well-qualified presidential candidate who happens to be a Mormon, virtually the same as the 17% who held this attitude in 1967...
The exact percentage of Americans who resist the idea of voting for a Mormon has varied slightly over the eight times Gallup has asked the question, typically when a Mormon was running for president, including George Romney (1968 campaign), Orrin Hatch (2000 campaign), and Mitt Romney...













Without the poll data one could make the assumption that a considerable amount of those people are progressives who are well known for their hatred of anything religious or with family values.
Also if I may point out that most blacks and Hispanics seem to be at ease with Mormons, the ones who are so very anti Mormon seem to be the 95% WHITE, educated, guilt ridden, self loathing far left limousine liberals. Remove those people and I think your percentages would be way down.