“I don’t know that I really have a lot to say,” the usually voluble Corker said twice. He eventually noted that he has offered advice to the businessman at key times but said he has been “discouraged by the results,” panning Trump’s high-profile foreign policy speech in Manchester, New Hampshire, on Monday.

“It wasn’t the type [of address] that one would expect a person who is wanting to lead the greatest nation in the world to make,” Corker added. “Fifty people have perished, and [53] more have been harmed.” Trump “continues to be discouraging.”

For Republicans grappling with the prospect that Trump could erase their Senate majority this November, the GOP standard-bearer has done little to pivot from the aggressive rhetoric and controversial policy stances that enthralled Republican primary voters.

Once again, vulnerable GOP senators running for reelection in swing states found themselves seeking daylight from Trump.