On April 29, 2024, ACLU-PA, Public Interest Law Center, and the law firm Dechert LLP sued Butler County on behalf of two voters whose provisional ballots were rejected by the board of elections in the 2024 Pennsylvania primary election. The voters voted provisionally because they were notified that their mail ballots were missing the inner secrecy envelope.
The county allowed voters with other errors, such as a missing signature or handwritten date on the return envelope, to cure their mistakes and submit corrected mail ballot envelopes. The county denied the same opportunity for voters who forgot the secrecy envelope.