Rita Johnston becomes the first female Premier of a Canadian province when she succeeds William Vander Zalm (who had resigned) as Premier of British Columbia.

William Nicholas Vander Zalm (born Wilhelmus Nicholaas Theodore Marie van der Zalm; May 29, 1934) is a politician and entrepreneur in British Columbia, Canada. He was the 28th premier of British Columbia from 1986 to 1991.

Rita Margaret Johnston (born April 22, 1935, née Leichert) is a Canadian politician in British Columbia. Johnston became the first female premier in Canadian history when she succeeded Bill Vander Zalm in 1991 to become the 29th premier of British Columbia, serving for seven months.

The daughter of John Leichert and Annie Chyzzy, she was educated in Vancouver. In 1951, she married George Johnston.Much of her early life was spent running a trailer park in the city of Surrey, British Columbia.