Last week college economics professor David Brat trounced House Majority Leader Eric Cantor in the Republican primary for Virginia's seventh congressional district. Prognosticators thought that Brat, a favorite of Tea Party supporters, was a long shot. How could he win? Hadn’t the Tea Party been on the wane? Now, Washington Post columnist Eugene Robinson warns, the Tea Party “should no longer be thought of as just a faction of the GOP. It’s calling the shots.” What's clear is that Tea Party voters turn out in droves and care passionately about politics. Many of those Teapublicans are also fervent Christians of the evangelical stripe.