PA is actually pretty Conservative ex cept for Philly, Harrisburg and to a, slightly, lesser extent, Pittsburgh.
The problem is massive, systemic voter fraud.
Been going on in Philly since the first days of the Republic.
In 2016 when the voting results came in for Philly before large areas of western PA, I began to believe that Trump had a chance of winning. Republicans must have saturated the polling places in Philly with election judges and poll watchers in 2016.
In 2020 with the vote counting in the huge city arenas, Republicans were denied an equal number of poll watchers.