And the un-endorsements of Donald Trump have begun, starting with Illinois Sen. Mark Kirk:
First un-endorsement -- Sen. Mark Kirk. "I cannot and will not support my party's nominee for President."— Erica Werner (@ericawerner) June 7, 2016
Sen MARK KIRK, perhaps most endangered gop incumbent, says no to Trump— Jonathan Martin (@jmartNYT) June 7, 2016
"I cannot and will not support my party's nominee for President"
Kirk said that he does not think Trump is fit to control the nuclear arsenal:
Given my military experience, Donald Trump does not have the temperament to command our military or our nuclear arsenal.— Mark Kirk (@MarkKirk) June 7, 2016
Back in March, Kirk confirmed that he would definitely support the Republican nominee, even if it were Trump.
Kirk is considered to be a very vulnerable Republican senator, and trails Democratic challenger Rep. Tammy Duckworth in several polls.
Buckle up folks, it's only going to get more interesting from here on out...