1990 Conservative Party (UK) leadership election 1990 Conservative Party (UK) leadership election The 1990 Conservative Party leadership election in the United Kingdom took place on 20 November 1990 following the decision of Michael Heseltine, former Defence and Environment Secretary, to challenge Margaret Thatcher, the incumbent Prime Minister, for leadership of the Conservative Party. Thatcher failed to win outright under the terms of the election in the first ballot, and was persuaded to withdraw from the second round of voting. She announced her resignation on the morning of 22 November 1990, ending more than 15 years as Conservative leader and 11 years as Prime Minister. Discontent with
2017 Conservative Party of Canada leadership election will also serve as Leader of the Official Opposition in the Parliament of Canada until a permanent leader is chosen. She defeated Candice Bergen, Diane Finley, Mike Lake, Rob Nicholson, Erin O'Toole, and the joint ticket of Denis Lebel and Michelle Rempel in the caucus vote. Under the party's constitution, Ambrose, as the interim leader, could not run for the permanent position. Following Harper's resignation, debate emerged within the Conservative Party regarding the timing of the leadership election. Some members of the party's national council called for a leadership convention as early as May 2016 according to "Maclean's" magazine. However,