original_query: What led to the dissolution of Parliament for a double dissolution election?
query: What led to the Australian double dissolution election of 1975?
answer: The Australian Senate's threat to block the government's budget by refusing to pass appropriation bills, and Prime Minister Gough Whitlam's intention to call a half-Senate election to break the deadlock, led to Governor-General Sir John Kerr dismissing Whitlam and installing Malcolm Fraser as Prime Minister.  Fraser then secured passage of the appropriation bills and dissolved Parliament for a double dissolution election.