Sen. Susan Collins says She Won’t Vote for Trump

Donald Trump is seeking to quell concerns he lacks the discipline or policy know-how to make a competent president, even as the list of fellow Republicans deeming him unfit for the Oval Office grows.

Maine Sen. Susan Collins is the latest Republican to announce her intent not to vote for her party's nominee. Collins said late Monday she'd thought "long and hard" about whether she was obligated to support the GOP nominee and decided she could not.

She says she's become "increasingly dismayed by his constant stream of cruel comments" and his inability to apologize.

The defection from a respected senator adds to a chorus of GOP voices insisting they can't back Trump. It comes as Trump is trying to shift attention to his revamped plan for far-reaching tax cuts.