1990 Conservative Party (UK) leadership election only to lose it again at the 2017 general 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
2017 Conservative Party of Canada leadership election Centre for the Study of Civic Renewal. Announced on August 23, 2016, that she intended to be a candidate but failed to register and announced in January that she was ending her campaign. Some of the polls below were conducted before nominations for the leadership closed and therefore include potential candidates for the leadership race. Rona Ambrose, as interim leader, is ineligible to run for the permanent leadership unless there is a change to the party's constitution. 2017 Conservative Party of Canada leadership election The 2017 Conservative Party of Canada leadership election was held on May 27, 2017. Party members