Federal Election: Mount Royal Elected. X Incumbent. 1 Rounding error. 1968 Liberal Party leadership election Trudeau won the leadership on the fourth ballot. His main opponents were Paul Hellyer and Robert Winters, both former ministers in Pearson's governments. 1 Rounding error. See also Electoral history of Lester B. Pearson - Trudeau's predecessor as leader of the Liberal Party and as Prime Minister. Electoral history of Joe Clark - Trudeau's principal opponent in two general elections, alternating as Prime Minister. Electoral history of John Turner - Trudeau's successor as leader of the Liberal Party and as Prime Minister. References External links Library of Parliament: History of Federal Ridings since 1867 CPAC - 1968 Liberal Convention Trudeau, Pierre