The poll was from October.
You have fraud, like they do in Hartford, New Haven, Bridgeport, etc. as we saw in 2010, they can sneak a couple thousand votes here and there and flip a race.
I don’t see any Biden bumper stickers in Connecticut. Yes, plenty of idiots support him, but they’re definitely not vocal about it. I don’t know if it’s 5%, but I bet it’s very close for comfort for them.