Information:  - Michael John Ahern AO ( born 2 June 1942 ) is a former Queensland National Party politician who was Premier of Queensland from December 1987 to September 1989 . After a long career in the government of Sir Joh Bjelke - Petersen , Ahern became his successor amidst the controversy caused by the Fitzgerald Inquiry into official corruption . Ahern 's consensus style and political moderation contrasted strongly with Bjelke - Petersen 's leadership , but he could not escape the division and strife caused by his predecessor 's downfall .  - The Commission of Inquiry into Possible Illegal Activities and Associated Police Misconduct (the "Fitzgerald Inquiry") (19871989) into Queensland Police corruption was a judicial inquiry presided over by Tony Fitzgerald QC. The inquiry resulted in the deposition of a premier, two by-elections, the jailing of three former ministers and a police commissioner who was jailed and lost his knighthood. It also led indirectly to the end of the National Party of Australia's 32-year run as the governing political party in Queensland.  - The National Party of Australia (also known as The Nationals or simply, The Nats) is an Australian political party. Traditionally representing graziers, farmers, and rural voters generally, it began as the Country Party in 1920 at a federal level. It would later briefly adopt the name National Country Party in 1975, before adopting their current name in 1982.   - Sir Johannes "Joh" Bjelke-Petersen, (13 January 191123 April 2005) was an Australian politician. He was the longest-serving and longest-lived Premier of Queensland, holding office from 1968 to 1987, during which time the state enjoyed considerable economic development. His uncompromising conservatism (including his role in the downfall of the Whitlam federal government), his political longevity, and his leadership of a government that, in its later years, was revealed to be institutionally corrupt, made him one of the best-known and most controversial political figures of 20th century Australia.    Given the information above, choose from the list below the object entity that exhibits the relation 'member of political party' with the subject 'mike ahern '.  Choices: - conservatism  - national party  - national party of australia  - possible
national party of australia