Trump doesn't have to dominate to win the election, he just has to hold his own. If you look at a graph of the polls, it is clear that the only time Clinton got surges in the polls was when Trump made huge blunders like attacking the Hispanic judge or attacking the father of the Muslim soldier. If he just avoids making those kinds of mistakes, he will win the election.
I think Trump is too cautious in what he says. I only watched the first half of the debate, but it seems to me he missed a lot of opportunities. He should have pounded Hillary on increasing taxes and forcing industry to give paid leave to all their employees. That would cost industry a bundle and we need to hold on to what we got in this country when it comes to employers and jobs.
He should have also pointed out the cost of these liberal colleges that make it unaffordable for some Americans to get a higher education. Like Commie Care, the cost is ignored--just send the bill in a different direction which is Hillary's plan. Don't worry about it, we'll just tax the rich some more. Trump should have pointed out that the top 10% of wage earners in this country already pay over 70% of all collected income taxes, and then ask if 70% isn't enough, how much more should they be paying?