The base may still nominate but in an era when it doesn’t elect does the hyperpartisan still get to serve? William Bradley says California provides a clue.

In this era in which hyperpartisans — on both far sides of the aisle — have become adept at screaming their mantras and building their straw men, frequently dominating what passes for “debate,” something very interesting is happening in California.

The partisans are beginning to evaporate.