Delaware County's twice-elected top prosecutor will run for attorney general of Pennsylvania in 2024. Jack Stollsteimer's announcement Monday adds him to a crowded Democratic primary field. He is seeking an office that played a critical role in repelling Republican attempts to overturn Joe Biden’s 2020 victory in the presidential battleground. Stollsteimer will lean heavily on his experience as district attorney in Pennsylvania’s fifth-most populous county. He also has been a federal prosecutor in Philadelphia, a top official in the state Treasury Department and the state-appointed school safety advocate in Philadelphia’s schools. Perhaps Stollsteimer’s most-touted achievement is fighting gun violence in the impoverished city of Chester.