Stirling entered provincial politics in the 1978 election, defeating Liberal cabinet minister Glen Bagnell by over 1,600 votes in Dartmouth North.[3] In June 1979, Stirling was appointed to the Executive Council of Nova Scotia as Minister of Social Services.[2][4] He was re-elected in the 1981 election,[5] and was moved to Minister of Consumer Affairs in December 1981.[6][7] Following his re-election in 1984,[8] Stirling continued to serve as Minister of Consumer Affairs until February 1987, when he was moved to Minister of Environment.[9] In November 1987, Stirling was shuffled again, becoming Minister of Municipal Affairs.[10][11] He was defeated when he ran for re-election in 1988, losing to Liberal Sandy Jolly by 121 votes.[12][13] Stirling died on March 2, 2020.[14]