Prior to the enactment of the
Charter as part of the
Constitution Act, 1982, the
Constitution of Canada already limited the length which the House of Commons to not more than 5 years under section 50 of the
British North America Act, 1867. It reads, An exception was made to the section 50 rule in 1916 so that the House of Commons in the
12th Canadian Parliament could last longer than five years due to the
First World War, but this was through a one-time
constitutional amendment (the
British North America Act, 1916). The
British North America (No. 2) Act, 1949 amended the
division of powers in the
Constitution Act, 1867, by adding section 91(1). This limited which portions of the constitution that the
Parliament of Canada could unilaterally amend. One rule that Parliament could not unilaterally amend was that the House of Commons could not last for more than five years without an election, unless war or rebellion caused two-thirds or more of the House to believe a longer term would be necessary. It read, The five year limit was to be entrenched and extended to provincial legislatures under the bill of rights in the
Victoria Charter, an unsuccessful set of constitutional amendments proposed in 1971 by Prime Minister
Pierre Trudeau. Although section 50 names the
governor general as the official who may call an election early (and section 4 of the
Charter does not specify an official), usually the governor general acts on the advice of the
prime minister. Before and after section 4, the prime minister may advise the governor general to call an election early simply because the prime minister feels it is an opportune time, or because they may be faced with a
non-confidence motion. ==Interpretation and enforcement==