Voters for both candidates undoubtedly had their mail in ballots rejected.

Let’s say it was 1% of PA voters.

1% of Philadelphia County is much more than 1% of rural counties. The legislature knows the math when these trip wires are enacted.

In fairness, Pennsylvania flags the errors and endeavors to notify the voter so they can cast a provisional ballot.

Casey will still fall short in my opinion. Too much ground to cover.