The 21st Legislative Assembly of Ontario was convened following the 1943 Ontario general election and was in session from August 4, 1943, until March 24, 1945, just prior to the 1945 general election. The Ontario Progressive Conservative Party, formerly the Ontario Conservative Party, led by George Drew formed a minority government. The Liberals, having lost seats to both the Conservatives and the Co-operative Commonwealth Federation, fell to third place.
William James Stewart served as speaker for the assembly.[1]
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|
| Party | 1943 | Gain/(loss) due to | 1945 | ||
|---|---|---|---|---|---|
| Death in office |
Byelection hold | ||||
| Progressive Conservative | 38 | (1) | 1 | 38 | |
| Co-operative Commonwealth | 34 | 34 | |||
| Liberal | 15 | 15 | |||
| Labor–Progressive | 2 | 2 | |||
| Independent-Liberal | 1 | 1 | |||
| Total | 90 | (1) | 1 | 90 | |
| Seat | Before | Change | |||||
|---|---|---|---|---|---|---|---|
| Date | Member | Party | Reason | Date | Member | Party | |
| Haldimand—Norfolk | February 9, 1944 | Wallace William Walsh | █ PC | Died in office | March 20, 1944 | Charles Hammond Martin | █ PC |