Over the last couple weeks, a fair number of Professional Politics Knowers have opined that rank-and-file Dems are being a bit silly in their worries that the polls are overstating Biden’s lead over Trump. That particular bit of ‘wisdom’ is one reason why most pundits should be ignored: if you’re that ignorant of the voters you’re discussing, then you’re likely ignorant of a great many things.
The concern most Democrats I know have isn’t the accuracy of the polls, but the uncertainty of how much extra Democrats will have to win by to overcome the Republican electoral mulligan granted by a right-wing judiciary. Instead of having to win by ‘fifty percent plus one’, Democrats will likely have to win by fifty percent plus one plus some additional factor which is impossible to determine due to the Republican-controlled courts. The rightwing judiciary has made it clear that they will make up whatever ersatz principle they need in order to limit the Democratic vote.
That’s what is making Democrats nervous, not the polls.
Republican Daddy will never save you, but voting in person or dropping off your ballot might.