Hey, Stinkdud, there will be a shift. In 2018. Of the 34 Senate seats up that year, you know how many are currently Republican?
8.
Of the remaining 26, there's one independent that currently caucuses with the Dems (Sanders), and one that caucuses with whichever party is currently in the majority (King, from Maine). The other 24 Senators up for re-election are Democrats. If HilLIARy wins, it's pretty much a guarantee that she will piss off the Republicans to the point that she could very well face not only a veto-proof Senate in 2019, but an impeachment-ready Senate as well.
Don't think they wouldn't try? Think again. She deserves to be removed by the Senate.
Want to know how to forestall this? Vote for Trump.