Eh we have seats to defend in New Hampshire and Colorado, too. I think both incumbents (esp. Bennet) start out favored, but those races will be competitive.
I think WI and NC are strong pickup opportunities given they'll be open seats, but start out toss-up at best (NC likely closer to Lean R given the bench). PA might be challenging given Toomey always seems to pull it out - though maybe this is the year he doesn't. Iowa would be very, very tough.
I'd expect the results to be around net neutral or D+1. That assumes Biden isn't extremely unpopular for whatever reason. If he is, Dems will lose seats.
I’ve heard Bennet is pretty popular, and CO is becoming less and less favorable for the GOP as time goes on. I suppose there’s an outside chance of the GOP picking it up, but I don’t see it.
I forgot about NH though. Still a slight lean D state but it’s certainly competitive.