Mr. Genova also uncovered a legal memorandum from Mr. Forrester's lawyer written in April, when State Senator Diane Allen, one of Mr. Forrester's opponents in the Republican primary, was trying to block him from taking the ballot position of James W. Treffinger. Mr. Treffinger, the Essex County executive, had resigned from the race because of scandal three days earlier, or 40 days before the primary. Senator Allen maintained that moving Mr. Forrester's name to Mr. Treffinger's place on the ballot would come too late under Title 19 of the state election law, which sets a deadline of 51 days before...