Might as well ask what would the GOP do with a pink unicorn. Getting one of these is about as likely as controlling the Senate next year.
I disagree. I think the Republicans have a much better than 50/50 chance of retaking the Senate in November. This is shaping up to be a Republican sweep year like 1994 and 2010,
Of course, if the Republicans do gain control of the Senate and keep control of the House, they will be blamed by the lamestream media for everything bad that happens anywhere in the world for the next two years so that Hillary can get elected with Democrat control of Congress in 2016.
A Republican controlled Congress can pass bills every day for Obama to veto and will still be labelled by the lamestream media as a do nothing Congress.