There are no Congressional Districts in Missouri capable of being flipped. They've been gerrymandered to hell.
The whole nation is gerrymandered to hell. A Democratic House would be not be easy obviously. Roy Blunt's Senate seat and R+7 districts like MO-2 and MO-6 (which McCaskill did win over Akin, as little as that means) would have be the type of places you'd make a run at, even as improbable (even impossible) as those would be to win.
Wins in those two seats would probably require open seats in wave Democratic years, which I really don't see on the horizon in Missouri. Wagner is pretty popular, and the only way her seat will come open is if she challenges McCaskill in 2018, a contest she could possibly win. Wagner didn't even really campaign for reelection last year, and still won in a landslide. Democratic investment in Missouri should focus on holding the Governor's mansion(which seems pretty likely at the moment) and attempting to regain enough seats to sustain a veto in the state House and Senate. And of course Clinton's campaign, because who knows, she might pull off an upset. But money spent on the congressional seats would probably be a waste.
