As well, when a political party with representation in the House of Commons selects a new leader who is not a sitting Member of Parliament, it is common for a member of that party's caucus to resign his or her seat so that the leader can run in the resulting by-election. The leader may, at their own discretion, continue to represent that district for the duration of their career in politics, or may run in a district closer to their home in the next election. As of 2012, for instance, Stockwell Day continued to represent the same district in British Columbia to which he was elected in 2000 when he first entered the House of Commons as leader of the Canadian Alliance, even though he was a resident of Alberta at the time of his initial election. Conversely, Joe Clark was elected in a by-election in Nova Scotia on the very same date as Day, following his reelection to his second stint as leader of the Progressive Conservatives, but held that seat only until the 2000 election and then stood in the Alberta riding of Calgary Centre.