The only specific allegations to have surfaced so far of attempts to cast an illegal ballot in Pennsylvania have been isolated and lodged by county officials who caught the perpetrators in the act.

For example, Chester County prosecutors announced Friday that they had filed charges against a 71-year-old registered Republican who cast two ballots on Election Day — one on behalf of himself, the other in the name of his son.

Donning sunglasses to hide his identity, prosecutors said, Ralph Thurman returned to his polling place in Malvern after voting once and tried to pass himself off as his son.

Poll workers recognized him and, according to the affidavit filed in his case, Thurman “hurriedly fled the building.”