This is always the care for Momala...
The initial honeymoon of "we're gonna elect a BLACK WOMAN YASS!" quickly fades the longer the campaign runs and the more people start to see she's really just an empty suit attempting to repeat the phrases she memorized, which were written by some of the most staunch progressive staffers she could find that met the necessary DEI quotas.
This was absolutely the plan with 2024. Slip her in to replace Biden at the absolute last moment possible snd hope that initial YASS KWEEN SLAY popularity would coast her into office.