What SHOULD happen in 2018 is that wishy-washy Republicans get primaried out, and then run THAT candidate against the Democrat. I'd expect a lot of enthusiasm on the GOP side for a candidate that ousted a do-nothing incumbent.
That would be the true referendum on Trump.
-PJ
Why aren't the Republicans asking about the Awan brothers who maintained the Democrats' computers in Congress, and have now fled to Pakistan?
-PJ