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
1990 Progressive Conservative Party of Ontario leadership election 1990 Progressive Conservative Party of Ontario leadership election The 1990 Ontario Progressive Conservative leadership election was a leadership convention held in May 1990 to elect a new leader for the Progressive Conservative Party of Ontario. Two candidates vied for the leadership - Mike Harris and Dianne Cunningham. Using a novel voting system used due to party funding constraints, Harris was elected over Cunningham in a single ballot by a margin of 7,175 points to 5,825 points. The convention was held to replace Larry Grossman who resigned following the 1987 provincial election in which he lost his seat and saw his