That #NeverTrump coalition — which often materializes at events hosted by the center-right Bulwark publication — is not satisfied with those numbers, and has been publicly pressuring retiring GOP senator Mitt Romney, an avowed critic of Trump’s, to join them in endorsing Harris.

"I believe that our best days lie ahead. I want to support a candidate for President who believes the same," former U.S. Senator Jeff Flake of Arizona said.

The Republican former senator from Arizona is backing Democratic presidential nominee Kamala Harris. Here's why.