Next year, at the beginning of the next Congress, the Senate has the opportunity to change its rules by a majority vote. Tom Udall has been pushing this all year; he calls it “the Constitutional option.” Udall would ask for a ruling from the chair, probably Joe Biden, to make a ruling on the ability of the Senate to change the rules. If Republicans object, Democrats will move to table their objection, and they only need 51 votes to uphold it. After that, the Senate can rewrite the rules.
Some old-line Democrats have been wary of this approach, but you get the sense that they are completely fed up with how the Senate operates. So they have set a date – January 5 – to attempt to change the rules.