You wait 26 years for another female Tory leader and then two candidates come along at once. Between Margaret Thatcher’s resignation in 1990 andDavid Cameron coming to power in 2005, the Conservatives had seen six leadership elections featuring 14 candidates, with not a single woman to be found on the ballot.
More information: https://www.theguardian.com/commentisfree/2016/jul/08/conservatives-female-leaders-feminism-margaret-thatcher-theresa-may-andrea-leadsom