The only Guardian commentator who reviewed the debate well
"It is clear that Trump’s pre-game press conference not only got talking heads to change the conversation, but it got Hillary Clinton – once believed to be unflappable – off her game, in a big way.
If Clinton was prepared for whatever Trump threw at her, it certainly didn’t come across in this debate.
Gone was the happy warrior from the last debate; in its place was a new defensive Hillary Clinton.
Trump kept Clinton on her heels for the entire debate. Whether sparring over Obamacare or foreign policy or tax reform or job creation, he effectively kept hammering her on her 30-year record.
Instead of a debate that was focused on Trump’s vulgar comments, the debate was focused on policy issues, and despite all of Clinton’s “preparation” when it came to the nuts and bolts of policy, Trump managed to not only go toe-to-toe with Clinton, he often got the best of her.
Trump needed to win tonight to stay alive. Clinton did not. Trump won, and he lives to fight another day. This race is far from over."
www.theguardian.com/commentisfree/2016/oct/09/presidential-debate-reactions-trump-clinton
But Trump will be hit with much, much more in the coming days, so the debate performance won't change much.