I wonder if Trump support will be like Brexit... Quiet, never telling a pollster the truth, then anexpected landslide. There may be be a whole block of people supporting Trump contrary to the predictable identity politics of the past 20 years.
I live in the UK....In Brexit mny thousands/millions who had never voted, or not voted for decades voted. The Pollsters had no idea, who or where they were, so never polled them, but the Brexit vote gave them a chance to change and save democracy.
My bet is that in the US people are even more pissed off, mny of these are the ones who have stopped/never voted etc.....they will vote for Trump in droves.
So yr right.