As has been explained on countless other threads, they don’t need a Democrat. They need 20 warm bodies to make a quorum. They have only 19 warm bodies without the cowardly, childish, craven Democrats.
They should just point at 19 of the protesters and tell them that they are the new senators, lets go!
They only need a 3/5ths quorum to pass an appropriations bill. They can pass other bills without any need for the Dems. Like making Wisconsin a right-to-work state, along with Vermont-style CCW.