The reason Dems haven't replaced Joe yet?
Joe & Kamala are "yes" puppets.
The cabal running our country (Obama/Clintons/Isreal/WEF/etc..) don't want someone that can think on their own. They picked Joe/Kamala because Joe is too far gone to question anything they ask for & Kamala is too clueless to question anything.
The reason they didn't switch to Gavin sooner is because Gavin would be more difficult for the cabal to control. Gavin would have his own agendas and he's too young/vibrant to just be a "yes" puppet.
Even if they switch to Gavin now, he still doesn't beat Trump so what's the point?
Concern now is the cabal does something like start WWIII to delay the election.
Would take massive cheating to steal this election.