Democrats and aligned advocacy groups are hitting the airwaves with a flood of campaign ads on the Iran war as they seek to win back in the House and Senate.

Troy Jackson, the Democratic nominee in Maine’s Senate race, said Sunday he does not regret telling his opponent Sen. Susan Collins (R-Maine) to “shut up” during a candidate debate that was interrupted by an anti-data center protester. During an interview on CNN’s “State of the Union,” host Dana Bash asked Jackson whether he regretted the…