i was listening to a radio broadcast today, and the DJ asked one of this co-hosts who he would vote for.
Now, this person danced around the issue and clearly was avoiding answering, but after some pressure finally admitted voting for Trump. To me this is really telling and it explains much of the poll numbers we see. There is a stigma around voting for Trump, which to me rings similar to the stigma around being an atheist.
Many atheists will try to soften their position in social settings by dancing around the issue, because they feel there is a stigma associated with it and they don't want to be perceived in a negative way, even if it's logical. Voting for Trump is on this same avenue. Many people know they will vote for him, but will keep it under wraps.