Election 2016: Republican Sen. Mark Kirk Calls Donald Trump ‘Unfit’ To Serve As Commander In Chief

U.S. Sen. Mark Kirk, R-Ill., who broke ranks earlier this month and announced he would not support Donald Trump as his own party’s presidential nominee, became the first GOP incumbent to run an anti-Trump ad Friday.

Kirk, who is considered one the most endangered Republican incumbents, dropped a 30-second ad titled “Even More,” which declares Trump “is not fit to be commander in chief.”