The former president's endorsement, first reported by NBC News, is also coming with two new digital ads for Spanberger's campaign.
Cole County Circuit Judge Daniel Green ruled that Secretary of State Denny Hoskins' proposed ballot language was "fair and sufficient," even though it does not explicitly state that the constitutional amendment would again ban most abortions in Missouri.
Voters in 32 U.S. states and the District of Columbia will have the opportunity on Tuesday to approve or reject a wide range of ballot questions, ranging from proposals on elections, abortion rights and taxes to even one on legalizing magic mushrooms.
Nearly every advertisement running in support of retaining Justices Christine Donohue, Kevin Dougherty and David Wecht prioritizes abortion rights as the reason Pennsylvanians need to vote yes.
The doctors also argue the November retention election could impact health care affordability, patient privacy and equal rights in Pennsylvania.