The news is likely worst for Sen. Bernie Sanders. At one point, Americans might have withheld their votes from him because of his Jewish faith -- fewer than half said they would support a Jewish candidate in 1937 -- but today his socialist ideology, given Americans' views on voting for a socialist candidate, could hinder his candidacy more.
To a lesser degree, evangelical Christian candidates may suffer, in that one in four Americans say they will not vote for an evangelical Christian. Candidates of various faiths who court American evangelicals, like Southern Baptists Cruz and Huckabee, or Catholic Santorum, could suffer from their association with the evangelical faithful and the social issues they take firm stances on.