 A number of Progressive Conservative leaders, principally from the Ontario wing of the party, started a "Stop Diefenbaker" movement, and wooed University of Toronto president Sidney Smith as a possible candidate.When Smith declined, they could find no one of comparable stature to stand against Diefenbaker.The only serious competition to Diefenbaker came from Donald Fleming, who had finished third at the previous leadership convention, but his having repeatedly criticised Drew's leadership ensured that the critical Ontario delegates would not back Fleming, all but destroying his chances of victory.