Primary voting is not a function of the "motivation" of the parties.
It's about how competitive the races are, obviously.
In a competitive primary race more people will vote than in a non-competitive race. Has absolutely nothing to do with the state of the party.
Then what about the CT primary? That had pathetic turnout.
Competitive has an effect, but at mid-terms the GOTV has a HUGE effect....
Simply put, the sheeple WILL NOT turn out in droves for this, and the Party Machines, not the "nutroots" will rule the day...
It's an incumbant world now...