Senate Democrats are holding a last-minute caucus meeting on Sunday evening to discuss the Clarity Act ahead of a crucial procedural vote scheduled for Tuesday.

Senate Majority Leader Chuck Schumer is convening the meeting as lawmakers continue trying to resolve several major disagreements surrounding the landmark cryptocurrency market structure bill, according to Politico.

The Tuesday vote is expected to determine whether the legislation can move forward to broader Senate consideration.

The outcome remains uncertain

A group of roughly a dozen Democratic senators has spent months negotiating over the bill, but several major issues are still unresolved.

Among the lawmakers involved in the discussions are Senators Kirsten Gillibrand, Mark…