The polls are wrong because people are afraid to tell the pollster their true feelings because they are afraid they will be targeted somehow.
I call this the "bumper sticker" effect. Why would you put a TRUMP 2020 bumper sticker on your car, knowing there are moonbats out there who will smash a headlight or otherwise damage your vehicle? Few bumer stickers. Hang up or lie to pollsters. Then come November, walk over hot coals to cast my vote for President Trump.