No Labels has already lost one of its co-founders, William Galston, over its push for a third-party ticket; Galston resigned in protest this spring over the possibility that the bid could tip the election to Trump. Democratic members of the No Labels–backed Problem Solvers Caucus in the House have disavowed the effort for the same reason. The moderate Democratic group Third Way is adamantly opposed to the idea, and a new bipartisan group is forming to stop it.

Joe Lieberman Weighs the Trump Risk