Not strictly true. In 1975 the Australian Senate refused to pass finance bills sent to it by the House of Representatives. The Prime Minister, as is required, and the majority in the House of Representatives but in the Senate the opposition had a majority. The opposition party claimed misconduct by the government and sought a general election. When it became likely that the government could no longer pay the bills because of lack of funds the Gov. Gen. dismissed, on his own initiative, the Prime Minister and appointed the Leader of the Opposition in his place. Then on the advice of a new Prime Minister called a double dissolution of Parliament. In Australia that means every Member of the House of Representatives and every Senator must seek reelection. This is unlikely ever to happen again in Australia but could theoretically happen in Canada as well.