I don't want to downplay how widespread of a problem the devotion to Trump is in this country, but I'm very skeptical of this poll. I don't believe for a second that 15% of Democrats or even anywhere close to it would respond affirmatively to this question, and I'm also not sure I buy that a majority of Republicans would go to a third-party regardless of Trump's involvement. They like to win and everybody knows that third-parties don't win.
I don't know what I'd expect the actual numbers to be, but I find these results questionable.
But wouldn't a new Trump party make the Republicans the "Third Party"?