Following an extended period of electoral success under the leadership of premiers
Dalton McGuinty and
Kathleen Wynne between 2003 and 2018, the Ontario Liberal Party experienced its worst electoral outcome since Confederation in the
2018 election. The party won less than 20% of the popular vote and fell to seven seats, losing
official party status in the legislature. Accepting responsibility for the party's historic defeat, Wynne resigned as party leader on election night. The party's two subsequent leaders,
Steven Del Duca and
Bonnie Crombie, were not sitting MPPs when they were elected leaders respectively in
2020 and
2023. Under their leadership, the party regained four
percentage points and six percentage points of popular vote respectively in the
2022 and
2025 elections, and regained official party status following the 2025 election. However, neither were able to significantly improve the party's electoral fortunes, nor to secure a seat for themselves. The party held a mandatory
leadership review vote during its 2025 annual meeting held from September 12 to 14, during which Crombie secured only 57% approval from party delegates. She had initially announced that she would remain as leader until her successor was elected, but ultimately resigned from the position on January 14, 2026. Following Crombie's formal resignation,
John Fraser, the most senior caucus member and the party's parliamentary leader since 2018, was selected as interim leader. Fraser had previously been interim leader on two occasions, from 2018 to 2020 and 2022 to 2023. ==Rules and procedures==