Senators Joe Manchin (D-WV) and Joe Donnelly (D-IN) are in close re-election dogfights in red states, and Republicans recently filed a lawsuit that just might help them keep their jobs.

Manchin’s and Donnelly’s opponents (Patrick Morrisey and Mike Braun, respectively) have voiced their support for a lawsuit filed by 20 Republican state attorneys general seeking to void the entire Patient Protection and Affordable Care Act. The patient protections in the name include prohibiting health insurance companies from discriminating against patients with pre-existing health conditions.

Donnelly and Manchin are calling them out on it without explicitly mentioning PPACA: a law whose actual provisions are popular with voters even though its name and especially its nickname (Obamacare) are not.