I mean, Democrats shouldn't overplay their hand based on polling. We saw what happened in 2016--polls are not reliable and there may be a large group of voters who are underrepresented that will show up for Trump. We have to act like we're behind until we know for sure we've won. These maps where people are trying to argue for Texas, Georgia, Iowa, Ohio, etc. flipping are overdoing it. Keep it simple and focus on PA, WI, MI, and AZ and build from there. We don't need to demolish Trump to get the point across.
People lying to pollsters.
I think creating fake rsvps to his events is a reasonable thing to do.
Which is why I'm pumping the breaks on NPV polls, because some state polls are far too close for comfort.