Good question.
Inquiring minds.... ;-)
Someone a little "tarnished" so the big guys in charge know won't step out of line too far, but someone who doesn't have blood on his/her hands from stabbing conservatives in the back and removing them from committee assignments, so that probably means no one the current leadership will qualify - but they just might get enough RINOs and DNC votes to make it.
Sadly, it will take many more elections to separate the bad guys and gals from those honest people who go to DC to really represent the folks back home and We the People!
Those guys and gals found out, that's "just not how things are done in DC," they had to "wake up and smell the coffee."
Many did and returned home not to become part of the problem, others stayed to fight but they've fought alone without a voice.
Maybe, just maybe there's a chance in the future to really turn things around but it isn't going to happen in 2015-16.