But some Sanders supporters say that resolution doesn't go far enough. They plan to introduce an amendment that would support the abolition of the superdelegate system for the 2020 election and would direct Wisconsin superdelegates to "cast their votes proportionally ... on each national convention ballot until released by their pledged candidate."

"The best thing we can do is neutralize their power and ... demand they vote the same way their state did," Davis said.

In order to have the amendment considered, it must be submitted to the convention secretary in writing before it is taken up. Approval would require support of a majority of the voting delegates present at the convention.

"This weekend will be a great opportunity for Democrats across the state to come together and talk about the future of our party and the issues that matter to all of us," said DPW spokesman Brandon Weathersby. "We look forward to a healthy discussion on Saturday about proposed resolutions and changes to the party platform — including conversations about how pledged and unpledged national delegates are selected. As Democrats in Wisconsin, we pride ourselves on being open and fair, and giving people across the state a process and venue to share their ideas and address their concerns."