Same thing they did in the last election. Ravage the other republican candidates but leave the dems alone.
Maybe Rove is working for the Bushes who seem to have made a deal with the Clintons. “Hillary, you get to be President this time, sorry Obama stole it from you last time. But this time it will go just as planned. You get your turn this time and Jeb gets to be President next time.”
Whoever the next Republican candidate will be he will take a fall whether he knows it or not. Maybe the Bushes will have Jeb take the fall just to establish street cred so that he will be well known enough to take on the post Hillary candidate.