I think the monied Republicans will finally realize the tea-baggers are losing them the Senate - now twice in a row. They'll retain control of the RNC brand, forcing out the fringe.
The Randian Conservatives will break out & follow a Paulite, w/ a Senator already in place. They'll peel off quite few pundits & other money makers, as well as the crazies like Nugent & Victoria Jackson. I predict she'll be featured on the next installment of Trump's apprentice atrocity.
Question is - who will get Ryan's endorsement? He's still in place to be a player in 2016.