it’s fear mostly. If the democrat candidate changed this late in the run, it significantly lessens the chance that the party will win, and to a lot of them, they see it as a “I can’t vote for trump” type vote. Personally I feel if he drops out now, the party wouldn’t recover in time for election cycle which would basically give trump the win.
this all the way. I have very vocally stated there needs to be an age ceiling on positions, there is age floors, there is zero reasons not to have an age ceiling.