I would caution my fellow Republicans not to dismiss Harris or anyone else who emerges the Democrat nomination process. In spite the assassination attempt, Biden's debate performance and cognitive issues, and the love fest that was the Republican National Convention, Trump seems to be remaining at the 47-50 % support level nationally. Even while 75% of the country was thinking Biden was unfit to run, Trump was not gaining support.
The Republican advantage with Biden in the race was that a lot of democrats would likely stay home or not visit the local drop box. That is almost guaranteed to change with whomever is the eventual standard bearer. And if they weren't turning to Trump a week ago, they certainly won't now. The Dems need to simply not have a bitter nomination battle and reignite some enthusiasm and this will again be on a razor's edge.