| 1957 Canadian federal election: Welland | ||||||||
|---|---|---|---|---|---|---|---|---|
| Party | Candidate | Votes | % | ±% | ||||
| Liberal | William Hector McMillan | 13,241 | 42.4 | -12.8 | ||||
| Progressive Conservative | William Bigelow Wellington | 10,620 | 34.0 | +7.6 | ||||
| Co-operative Commonwealth | Melvin L. Swart | 7,356 | 23.6 | +7.8 | ||||
| Total valid votes | 31,217 | 100.0 | ||||||