Bjelke-Petersen was preoccupied with home duties until well after Joh Bjelke-Petersen became Premier in 1968. In the 1970s, however, she assumed an increasingly public role, as part of the Queensland National Party's increasing promotion of a Bjelke-Petersen "personality cult". Her simple, homespun sayings and her recipes and affection for
pumpkin scones were often associated with her in the media. At the
1980 federal election, against the wishes of party president
Robert Sparkes, Joh Bjelke-Petersen arranged for his wife to be placed in the number one position on the National Party's Queensland senate ticket, ensuring her election. Her term was due to commence on 1 July 1981, however, on 6 February 1981, Queensland Senator
Glen Sheil resigned, creating a
casual vacancy. She was appointed on 12 March 1981 for the remainder of Sheil's term, and then continued into her own term. Bjelke-Petersen
crossed the floor 18 times during her career, the 12th-most of any MP between 1950 and 2019 and the second-most by a woman after
Kathy Sullivan. ==Knighthood==