Taiwan’s presidential campaign has taken a dark turn, with the opposition challenger accusing intelligence services under the control of incumbent President Ma Ying-jeou of tracking her campaign events for political advantage.  The allegations — unproven and denied by Ma — conjure up memories of Taiwan’s unsavory one-party past, when Ma’s party, the Nationalists, used their total control of the state apparatus to persecute opponents. While the island has since morphed into one of Asia’s most dynamic democracies, many senior civil servants may still believe that serving the top political echelon involves cutting corners.