A Clinton presidency would be a continuation of the slow boiling of the frog. A Trump presidency would be to throw that same frog straight into boiling water. It could instantly kill the frog. Or the frog might manage to jump right out.
In the second scenario, the frog will know it’s being boiled and has an opportunity to respond, possibly preventing it’s own death. The first scenario, however, is inevitable death, just slower and maybe not as slow as some might think.