Obama was able to do it in 2008 and 2012 because he was an _amazing_ statesman. It's my personal belief that we may not see another person as skilled in public speaking/appeasing the public again in our lifetime. I supported him both times despite my personal belief that he did not move the Overton Window very far in either direction.
What I do recommend is to take your more extreme rhetoric and see if it can be applied to your own positions (in many cases it can, in some it cannot) and try to determine for yourself if you are falling trap to 'regurgitated rhetoric' or legitimately offering critical thinking.
tldr; You persuade no one by taking a theistic approach to reason and perhaps alienate more than you convert.