HARRISBURG, Pa. (AP) — Some of Pennsylvania's largest counties were among those working Monday to help voters fix mail-in ballots that have fatal flaws such as incorrect dates or missing signatures on the envelopes used to send them in. Elections officials in Philadelphia and Allegheny, which includes Pittsburgh, announced measures they were taking in response to state Supreme Court orders in recent days that said mail-in ballots may not be counted if they lack accurate handwritten dates on the exterior envelopes. Ahead of Tuesday's midterms, more than a million mail-in and absentee ballots have already been returned in Pennsylvania, with...