Catholics in Iowa went to church. Steve Bannon tracked their phones.

“If your phone’s ever been in a Catholic church, it’s amazing, they got this data,” Bannon told director Alison Klayman as they sat in his Washington, D.C., home on the eve of the 2018 midterm elections.

“Literally, they can tell who’s been in a Catholic church and how frequently,” Bannon added. “And they got it triaged.”