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James Rydberg's survey suggests - contra the media's obsession with political sex scandals - that "embezzling money or cheating on their taxes is the worst thing a candidate can do; followed closely by lack of competence." Another illuminating finding:
The average Republican views being an atheist or Muslim candidate about how the typical American views a candidate who frequents prostitutes. Similarly, Republicans view a homosexual candidate like most Americans view a [candidate] who has been convicted of drunk driving.
Mitt Romney watchers: note that being Mormon is close to neutral, according to the survey, and in the same ballpark as being gay. Of course, voters are terrible at explaining why they vote the way they vote, so these responses should be taken with a generous dash of salt.