Trump will go for insults and empty slogans.
Hillary has proven time and time again she stays on message. I can see her saying something like "Oh Donald!!! Another insult??? Is that how you'll defeat ISIS and go toe-to-toe with Putin. Blah, blah, blah. The American people want to hear about ABC". So while Trump is trying to drag her down, her strategy is to try to bring him in to policy. It should be fun to watch.

Remember Donald has never debated one person before. Hillary has been practicing all types of candidates for years now.