Most likely outcome?

[Progressive Pessimist]

Without hesitation the GOP flip both chambers entirely due to historical patterns repeating themselves.

Granted, I am at least confident that it will not be anywhere near as devastating for Democrats as 2010 or 2014 were. That's especially true in the Senate this time around where Democrats actually have their most favorable class to play both defense and offense with. Polarization can work to our favor too. However, all the GOP will need is to net one Senate seat and that may end up being very doable. 

It's so upsetting that the GOP in its current form can win at all in this country.