Democrats are mounting a coordinated mission to kill a third-party presidential bid — and it’s coming soon to Capitol Hill.

Officials from the progressive group MoveOn and centrist group Third Way are planning to brief Senate Democratic chiefs of staff on July 27, according to an invitation obtained by POLITICO. It’s part of an effort to educate Democrats about the risk that a third-party bid funded by the well-heeled group No Labels could pose to President Joe Biden — particularly if centrist Sen. Joe Manchin (D-W.Va.) runs for president rather than reelection.

Matt Bennett, executive vice president for public affairs at Third Way, and Rahna Epting, the executive director of MoveOn, will speak to Democratic senators’ top aides, according to the invitation. The invite tells chiefs of staff dryly that the two “want to share some information that they have on No Labels.”