| 1958 Canadian federal election: Welland | ||||||||
|---|---|---|---|---|---|---|---|---|
| Party | Candidate | Votes | % | ±% | ||||
| Liberal | William Hector McMillan | 15,365 | 42.7 | +0.3 | ||||
| Progressive Conservative | Allan Ernest Pietz | 14,053 | 39.1 | +5.1 | ||||
| Co-operative Commonwealth | Mel Swart | 6,550 | 18.2 | -5.4 | ||||
| Total valid votes | 35,968 | 100.0 | ||||||