One key variable is those "low information" voters. Kind of dumb to not have picked a side by now but don't forget that there are a lot of people who don't follow politics that closely, until these last couple of months. Guaranteed this is the first time some people have heard that Mr. Businessman keeps filing for bankruptcy over and over, or refuses to release his tax returns. She did score a solid punch to the face on that topic.
Provided these folks were watching the second half, he got seriously incoherent. If they care at all about foreign policy, it should be frightening how little he (a) knows, or (b) cares, about these things.