Harris won the moment Biden dropped out. That's why the Democrats have already started moving right and touting Republican endorsements, they know they've got this election on lock and they're getting a head-start on signalling another "business-friendly" administration.

Trump's supporters will throw a tantrum as reality starts to seep in, so expect a significant increase in stochastic terrorism and maybe even a (dis-)organized coup attempt. There will be casualties, but the true believers have been inflating their numbers to maintain the image of a contestable election and will severely overestimate their ability to overthrow the government.