It consisted of the County of Dufferin, the Townships of Adjala and Tosorontio and the Town of Alliston in the County of Simcoe, and Townships of Arthur, Erin, Maryborough, Minto, Nichol, Peel, West Garafraxa and West Luther, including the Towns of Mount Forest and Palmerston in the County of Wellington.
The electoral district was abolished in 1987 when it was redistributed between Guelph—Wellington, Perth—Wellington—Waterloo, Simcoe Centre, Wellington—Grey—Dufferin—Simcoe and York—Simcoe ridings.
|- |Progressive Conservative |BEATTY, Perrin |align="right"|25,807 |Liberal |GREENE, Harry A. |align="right"| 11,202 |New Democratic Party |KOECHLIN, Jeff |align="right"| 4,744 |}
|- |Progressive Conservative |BEATTY, Perrin |align="right"|21,205 |Liberal |DAVIES, Larry |align="right"|12,104 |New Democratic Party | CHAMBERS, Cecil |align="right"| 5,966 |Libertarian | WATSON, Norma |align="right"| 162 |}
|- |Progressive Conservative |BEATTY, Perrin |align="right"| 29,983 |Liberal |GREEN, John |align="right"| 7,303 |New Democratic Party |YOUNG, Sandy W.A. |align="right"| 6,468 |}