I mean odd that you KNOW none of these people where going to vote for Harris but these endorsments will get people to vote for Harris from the trump camp. I mean I would argue that there are people who remember past political actions and do not want to suport someone also suported by ghools, and this was either the last straw, or enough that they felt there was some alterer motive here.

Second, have you seen any trump suporter, or someone thinking about suporting trump they are unlikely to be pulled away.

third, threat to democracy? I mean I hate to break it to you but at best the US is an Oligopoly, and even then I would argue the dems are just a few steps behind. As for the the SCOTUS, what is stopping biden from using the above the law power... or Haris, why is this only a concern when trump might use it

fourth, you have to relise that DICK CHENEY endorsing your canidate is not going to be a good look, especialy reveling in it. the better political move would be to use his endorsement to open up a conversation about all the evil he did, and the farther promotion of the Unitary Executive (Really started by Reagon and his staffers... who also endorsed harris) leading us into the mess we are in today, and to shove that endorsement where the sun dont shine