Which Congressional races in 2018 are you most optimistic/pessimistic about?

[Heisenberg]

I'm optimistic about IN and ND.

Very pessimistic about MO, I worry that Wagner may not get the nomination, and in Missouri, intraparty fights are pretty common with Republicans (see MO-Gov, Lt Gov, AG 2016, MO-Sen 2012, MO-Gov 2008, etc.) which is not good.
In 2022, Blunt needs to retire so one of Jason Smith, Eric Greitens, or Eric Schmitt can take the seat.
Also pessimistic in OH and WI. I really want both incumbents out so bad, but they will be harder to knock off than they appear to be on paper.

[Heisenberg]

I'm really bullish on our odds in 2018.  There are 10 Trump state Democrats running for re-election, and we only need eight for a filibuster-proof majority.

Well, I'll give you that MO & IN are likely GOP pickups, but ND, MT, & WV are solid Trump states that have popular Democratic incumbents, so who knows. The rest (MI, WI, PA, OH, & FL) look like a stretch to me. I see 2-5 GOP pickups, assuming the GOP can hold NV & AZ. That may increase if the popular DEM incumbents in WI or MI decide not to run for re-election (as opposed to the (popular) DEM incumbents in PA, OH, & FL, who've already decided to run for re-election).

Lol, in Ohio and Wisconsin, Brown and Baldwin, two die-hard fire breathing liberals, can't be too too popular. I already plan to donate at least a little to their opponents.