1) There are two ways to think of debates.
a) Did you excite/enthuse base? On this, Trump wins. He was consistent, and made the points that he is running on in this election--law/order; economy; D corruption in terms of FBI investigation/Hunter; handling of virus. #Debates2020

2) Biden didn't help himself with base. Performance was OK, but he was forced several times to distance himself from policies that are baseline progressive demands--Medicare for All, defund police, Green New Deal. Never forget the D party is seriously divided. #Debates2020

3)Then b) Did u persuade anyone not already decided? WSJ recent polls suggests there weren't many persuadable watching this debate. Most have made up minds. Still, on that front, legitimate question if Trump steamroller style won him points with, say, suburban women. #Debate2020

4) But also legitimate question if Biden's mealy answers on city violence, or China/jobs, or Hunter/ethics won him points with average independents.
Overall, debate was too messy to call a winner. But in such a tight race, different calculations come to bear. #Debate2020