Nope. The GOP was going to win the midterms. It's going to become the party of Congress as long as it maintains its skillful use of gerrymandering.
I should probably point out that I have no loyalty to either party. I mentioned that in my first post or so here. I regard the GOP as ruthless and calculating and willing to say and do whatever it takes to win and the Democrats as corrupt demagogues more than happy to tear the country apart for their thirty pieces of silver. It's not with any conscious bias that I point out that Hillary is going to win and there's not a damn thing anyone, including the electorate as a whole, can do about it or that the GOP is either going to adapt to its new, quite possibly permanent role or whither and die.