| Election | Political Party | Elected | Votes | Magnitude |
|---|
| Federal (August 7th, 1867) | .
Conservative Party of Canada/Parti conservateur du Canada to 1942 | Angus Peter McDonald | 1063 | 1 |
| Federal (July 20th, 1872) | .
Liberal Party of Canada/Parti libéral du Canada | George William Ross | 1322 | 1 |
| Federal (January 22nd, 1874) | .
Liberal Party of Canada/Parti libéral du Canada | George William Ross | 0 | 1 |
| Federal (September 17th, 1878) | .
Liberal Party of Canada/Parti libéral du Canada | George William Ross | 1635 | 1 |
| Federal (June 20th, 1882) | .
Liberal Party of Canada/Parti libéral du Canada | George William Ross | 1651 | 1 |
| Federal (February 22nd, 1887) | .
Conservative Party of Canada/Parti conservateur du Canada to 1942 | William Frederick Roome | 2110 | 1 |
| Federal (March 5th, 1891) | .
Conservative Party of Canada/Parti conservateur du Canada to 1942 | William Frederick Roome | 1529 | 1 |
| Federal (June 23rd, 1896) | .
Liberal Party of Canada/Parti libéral du Canada | William Samuel Calvert | 2274 | 1 |
| Federal (November 7th, 1900) | .
Liberal Party of Canada/Parti libéral du Canada | William Samuel Calvert | 1989 | 1 |
| Federal (November 3rd, 1904) | .
Liberal Party of Canada/Parti libéral du Canada | William Samuel Calvert | 1996 | 1 |
| Federal (October 26th, 1908) | .
Liberal Party of Canada/Parti libéral du Canada | William Samuel Calvert | 1856 | 1 |
| Federal (September 21st, 1911) | .
Liberal Party of Canada/Parti libéral du Canada | Duncan Campbell Ross | 1883 | 1 |
| Federal (December 17th, 1917) | .
Opposition (Laurier Liberals) | Duncan Campbell Ross | 3930 | 1 |
| Federal (December 6th, 1921) | .
Progressive Party of Canada | John Douglas Fraser Drummond | 5543 | 1 |
| Federal (October 29th, 1925) | .
Liberal Party of Canada/Parti libéral du Canada | John Campbell Elliott | 4926 | 1 |
| Federal (September 14th, 1926) | .
Liberal Party of Canada/Parti libéral du Canada | John Campbell Elliott | 6187 | 1 |
| Federal (July 28th, 1930) | .
Liberal Party of Canada/Parti libéral du Canada | John Campbell Elliott | 6329 | 1 |
| Federal (October 14th, 1935) | .
Liberal Party of Canada/Parti libéral du Canada | John Campbell Elliott | 6369 | 1 |
| Federal (March 26th, 1940) | .
Liberal Party of Canada/Parti libéral du Canada | Robert McCubbin | 6024 | 1 |
| Federal (June 11th, 1945) | .
Liberal Party of Canada/Parti libéral du Canada | Robert McCubbin | 6690 | 1 |
| Federal (June 27th, 1949) | .
Liberal Party of Canada/Parti libéral du Canada | Robert McCubbin | 7938 | 1 |
| Federal (August 10th, 1953) | .
Liberal Party of Canada/Parti libéral du Canada | Robert McCubbin | 8645 | 1 |
| Federal (June 10th, 1957) | .
Progressive Conservative Party of Canada/Parti progressiste-conservateur du Canada | W. H. A. Thomas | 9075 | 1 |
| Federal (March 31st, 1958) | .
Progressive Conservative Party of Canada/Parti progressiste-conservateur du Canada | W. H. A. Thomas | 11974 | 1 |
| Federal (June 18th, 1962) | .
Progressive Conservative Party of Canada/Parti progressiste-conservateur du Canada | W. H. A. Thomas | 10178 | 1 |
| Federal (April 8th, 1963) | .
Progressive Conservative Party of Canada/Parti progressiste-conservateur du Canada | W. H. A. Thomas | 10247 | 1 |
| Federal (November 8th, 1965) | .
Progressive Conservative Party of Canada/Parti progressiste-conservateur du Canada | W. H. A. Thomas | 9768 | 1 |
Middlesex West (Ontario)