Major progressive organizations are pushing the Democratic Senatorial Campaign Committee to deny funding to any Democratic senator who votes for, or otherwise enables the confirmation of, Supreme Court nominee Neil Gorsuch .

Credo, AllofUs, UltraViolet, Friends of the Earth Action, Demand Progress and other online activism heavyweights have already amassed hundreds of thousands of signatures on a petition to be delivered to the DSCC.

Representatives from the groups plan to deliver the petition to committee headquarters in Washington, D.C., on Monday and demand a meeting with DSCC chair Sen. Chris Van Hollen (Md.). Some liberal leaders are also scheduled to speak out against Gorsuch at a rally in lower Manhattan on Saturday.

We need clear lines in the sand that demonstrate whether or not Senate Democrats are with us or against us. One of the clearest lines is where money flows from the DSCC, said Erich Pica, president of Friends of the Earth Action, an environmental organization.

Progressives are adamant about blocking Gorsuchs confirmation, because of his extremely conservative legal record. They believe he will pose a threat to major environmental regulations, abortion rights, worker protections and campaign finance laws.

Theyre also still angry that Senate Republicans refused to grant hearings to Merrick Garland, former President Barack Obama s Supreme Court nominee. Garland was far more moderate than Gorsuch, they note.

Given how the Senate Republicans treated Merrick Garland, there is no reason to capitulate to the Republican demands, Pica said.