It was never the plan to keep him for 4 years.
The plan was to have him leave after 2 or 3 years, in order to install Harris so that the Dems could down in history as having had the 1st woman president (and a woman of color, no less). However, they never counted on her being such a disaster and having worse numbers than Joe.
Now they’re in a panic trying to pick her VP - someone who could run for president him or herself. They’re desperate for Michelle to say yes.
The first transgender Veep!