I already voted Trump but whenever a pollster calls I say I am undecided and leaning Biden. I'm getting all sorts of mailings from Democrats now which is costing them money and providing me with a good source of mulch. I believe many are doing the same and the pollsters are in for another big surprise in November, at least I hope so.

I usually don't answer the phone when it's a number I don't know. Everytime I do answer it's someone wanting money or who I'm voting for which I tell them I won't answer. Like you I've already voted absentee and for Trump. The Dems have a huge war chest of funding behind them and my mailbox is full of crap for their candidates.
I hope you're right on the surprise in November but I'm nervous and it doesn't look good for the Senate right now either. I don't care who this pisses off but Trump's team has run a terrible campaign, they need to focus on what he's done and they slow played the campaign too long. He hasn't helped either and shot himself in the foot repeatedly by his actions.