In 1975, Bjelke-Petersen played what turned out to be a key role in the political crisis that brought down the Whitlam government. When Queensland Labor Senator Bertie Milliner died suddenly in June 1975, Bjelke-Petersen requested from the Labor Party a short list of three nominees, from which he would pick one to replace Milliner. The ALP refused to supply such a list, instead nominating Mal Colston, an unsuccessful Labor candidate in the 1970 election, whom Bjelke-Petersen duly rejected. On 3 September Bjelke-Petersen announced that he had selected political novice Albert Field, a long-time ALP member who was critical of the Whitlam government. Field's appointment was the subject of a High Court challenge and he was on leave from October 1975. During this period, the Coalition led by Malcolm Fraser declined to allot a pair to balance Field's absence. This gave the Coalition control over the Senate. Fraser used that control to obstruct passage of the Supply Bills through Parliament, denying Whitlam's by now unpopular government the legal capacity to appropriate funds for government business and leading to his dismissal as Prime Minister. During the tumultuous election campaign precipitated by Whitlam's dismissal by Sir John Kerr, Bjelke-Petersen alleged that Queensland police investigations had uncovered damaging documentation in relation to the Loans Affair. This documentation was never made public and these allegations remained unsubstantiated.