North Dakota Senator Heidi Heitkamp apologized Tuesday after her campaign published an ad identifying survivors of domestic violence, sexual assault and rape without their knowledge or permission. The ad was an “open letter” to her Senate race opponent, Republican Congressmember Kevin Cramer. This is Senator Heitkamp speaking on local radio station WZFG.

Sen. Heidi Heitcamp: “I think that this is horrible. And I look at this the way I would if I were someone whose name was in the paper who didn’t authorize it, and I think that that is a colossal and huge mistake.”

Recent polls show Heitkamp trailing Kevin Cramer by around 10 points.