Because, before Harris can depose Biden, she has to be able to ram her VP replacement into the job.
As it takes a simple majority of BOTH the House and the Senate, the Leftists MUST win the NEXT election. Which, given the way they have pi$$ed off the Normals, and the determination that they will have to monitor the next election carefully, will not be possible unless they can replace real votes with fake mail-ins.
If you have a Democrat or a RINO in Congress who is up for re-election in 2024, make sure that they know they will NOT be returned unless this bill is gutted in the reconciliation process. Make it hurt. Pressure local DA’s to investigate any potential crimes – financial, ethical, moral. Dog them relentlessly, and make sure they know it will get worse.