While the issue of the party leadership was settled, at the lower levels unprecedented intraparty warfare began. Martin replaced half of Chrétien's ministers, one of the largest cabinet turnovers in Canadian history for a ruling party undergoing a leadership change. Ministers such as John Manley, Allan Rock, Don Boudria, David Collenette, and Sheila Copps, who had played key roles during Chrétien's decade in power, were reduced to minor roles or compelled to take patronage appointments, and many of them decided to retire from politics.