HARRISBURG, Pa. - The once-delayed Pennsylvania primary won't determine the presidential nominees, by now a foregone conclusion. But the voting in two weeks will feature legislative and congressional races, a first run for some new paper-record voting systems and the inaugural use of newly legalized mail-in ballots. Voter registration will end Monday for the June 2 primary. The latest figures show many Pennsylvanians have embraced the state’s new vote-by-mail option that was passed last year but has been widely adopted as a way to avoid pandemic exposure. More than 1 million Pennsylvania voters have requested mail-in ballots, including 700,000 Democrats...