I thought it was Mike Rounds of South Dakota?
Yeah. Typo.
We have to wait until after election day to discuss this scenario, given that literally anything is possible this cycle. Still, I think a GOP controlled Congress would help Hillary because then the entire legislative branch will refuse to legislate for two years.
That's about a Republican controlled Congress rather than one where the tea party has more of a voice.
Generally, every Republican elected is good for the leadership because it means they don't need everyone's vote, which avoids a few embarrassments.
Republicans could do more to pass things through the House and Senate, forcing Democrats to be the ones vetoing and filibustering popular items.