Without Biden falling deeply ill or dying before the DNC, I feel pretty confident we're not going to see a change in the D ticket at this point.. those that wanted to see Biden gone tried very hard to get enough traction to make that happen over the last few weeks, and it didnt work.. and now the country is far more focused on the assassination attempt of trump than they are Biden not being able to string more than 9 words together after 8PM... It will be at least 2-3 more weeks before Trump isnt the sole focus of the media and the general public.. the RNC kicks off today, etc..etc..
3 weeks from now, puts us just 1-2 weeks before the DNC.. which isnt enough time to get the momentum needed to put another candidate in place (again, unless biden suddenly becomes incredibly ill or dies)..