 The convention, held on October 1, 1930, proved to be a turning point both for the party and for Macdonald. In a departure from tradition, the party's new leader would be chosen by convention delegates instead of Liberal caucus members at the legislature. Two veterans of Liberal politics, both wealthy businessmen, were contesting the leadership. There was little enthusiasm, however, for either. Just as nominations were about to close, a delegate from Truro rose unexpectedly to nominate Macdonald. Surprised, Macdonald at first declined the nomination, then agreed to accept it when he sensed strong support on the convention floor. A few hours later, the 40-year-old Macdonald had won a resounding first-ballot victory to become the new Liberal leader.
