There's an instinct to think "those votes can be turned, now that they have seen the truth" and it's a DUMB INSTINCT.
When someone is conned, they are going to be strongest defender of the con man.
Obviously, individual exceptions will be more nuanced, but as a whole, that bloc ain't moving.
Now, that's just my take. Not a psychic. But I have noticed that those arguing otherwise sure seem to be ones who benefit most from that argument happening.
Probably just a coincidence, though.
But if you need to not talk to them? Do what you need.
The ones who are going "OH WOE IS ME, I WOULD CHANGE MY VOTE IF ONLY YOU WERE NICER TO ME" are 3s, and the fact that they're attempting to apply PUA strategies to politics nauseates me on several levels.