Deam U.S. Senate candidate Tom Nelson released a new digital ad charging U.S. Sen. Ron Johnson hasn't done anything about gun-related school incidents, even though they've increased from 15 when he was elected in 2010 to 249 last year.
Nelson's campaign said the ad is running on digital platforms, but didn't release other details.
Nelson says in the ad he shouldn't have to worry about his kids whe...
