It helps by getting a feckless back-stabber out of power.
If you tracked the 2012 Senate races, you would already have seen McConnell's failure of leadership in building a wave to nationalize the Senate races. You are seeing the same things this cycle. Pundits are already asking where the nationalize messaging is. The answer is nowhere, because McConnell only knows how to cower and hide and hope the Democrats mess up more than he does. They don't.
If McConnell were not in the Senate, we would not have seen the racist smearing of Chris McDaniel in Mississippi at McConnell's direction.
Keeping McConnell in the Senate is what will hurt conservatives in the future.
-PJ
Turns out that it was a retread that had been banned multiple times.
/johnny