Trump is losing support among GOP senators

As Sen. Lisa Murkowski of Alaska navigated the halls of Congress on Sunday, she dropped a bombshell in what would otherwise have been a perfunctory walk-and-talk media interview. 

“I wish that, as Republicans, we had a nominee I could get behind," Murkowski told CNN's Manu Raju. "I certainly can’t get behind Donald Trump.”

Murkowski, who endorsed Trump rival Nikki Haley in the Republican presidential primary, had already intimated that she "could not" vote for Trump, but she was much more direct with Raju about the implications of Trump winning the Republican nomination. She joins two other GOP senators, Mitt Romney of Utah and Todd Young of Indiana, in saying they will not support Trump.

When Raju asked if she might become an independent, Murkowski deflected at first, saying, "Oh, I think I’m very independent minded.”

But when Raju followed up to specify that he was talking about a party switch, Murkowski declined to dismiss the possibility out of hand. “I am navigating my way through some very interesting political times," she said. "Let’s just leave it at that.”