“The Supreme Court will hear arguments Monday in a case that could shrink government unions and their campaign war chests by as much as two thirds, with potentially devastating consequences for the Democratic Party in a competitive election cycle,” Politico reports.

“The case, Janus v. AFSCME, challenges the money that public unions representing teachers, firefighters, nurses and other government employees collect from non-members to cover their share of collective bargaining costs. Democratic candidates and causes rely on these unions for more than $100 million in contributions every election cycle, and for armies of workers dispatched to staff phone banks and canvass neighborhoods across the country.”