Suburban Philadelphia counties are being asked to throw out the mail-in ballot applications of hundreds of voters in what the ACLU says are mass-produced and illegal challenges. The challenges question the voter’s residence based on a supposed match with a U.S. Postal Service change-of-address database. Via the Associated Press: Diane Houser, a supporter of former President Donald Trump who filed over 200 of the challenges in Chester County, said the challenges are nonpartisan and from a grassroots network targeting the ballot applications of people who moved out of state. However, the ACLU said the challenges are illegal because voters can only be challenged on their qualifications to register to vote.