Don't think so, actually. Thing Trump was, the more grotesquely he behaved and spoke, the more people were determined to vote for him. Why? Precisely because he appalled and horrified the people his supporters hate. The very fact that he he appeared to have no filter - lying outrageously, saying appalling things and mocked sacred cows like the disabled and POWs - gave him his edge because they made the bien pensant liberals clutch their pearls. A more polished candidate wouldn't have been able to achieve that.