February 6, 2006: Harper Cabinet is sworn in. Liberal David Emersoncrosses the floor to join the new government thus changing the standings in the Canadian House of Commons to Conservatives 125, Liberals 102, BQ 51, NDP 29, Independent 1. This has the potential to be very relevant in terms of numbers, as it allows a Conservative-NDP voting bloc to command a majority.
February 19, 2006: Bloc Québécois House Leader, Michel Gauthier, announces that his party will vote to keep the government in office for a "good while". So long as the Bloc votes with the government on confidence measures, they will pass.
April 3, 2006: Peter Milliken is re-elected Speaker of the Canadian House of Commons becoming only the third Opposition MP to serve as Speaker. The Speaker only votes in the event of a tie and then must vote to support the "status quo". The election of a Liberal Speaker effectively gives the Conservatives an additional cushion by denying the Liberals a vote. Numerically, the Conservatives can now pass legislation and win motions of confidence with the support of any one Opposition party, i.e., the Conservatives and the NDP combined have enough seats to win a vote, as they do combined with BQ or the Liberals (assuming all MPs are present and vote without any defections).
August 28, 2006: Bloc Member of Parliament, Benoît Sauvageau (Repentigny), dies in a car accident.
December 14, 2006: Liberal leader, Stéphane Dion, says that the Liberals are "preparing" for a spring election.
December 19, 2006: Liberal leader, Stéphane Dion, appoints Scott Brison and Bob Rae as co-chairs of his party's election platform committee and Gerard Kennedy as advisor for election readiness and renewal.
January 5, 2007: Liberal MP Wajid Khan crosses the floor to join the Conservatives to retain his position as special advisor to the Prime Minister for the Middle East and Afghanistan.
January 11, 2007: Liberal MP Jean Lapierre announces that he will resign his seat of Outremont before the end of the month, which he does on January 28, 2007.
February 6, 2007: Independent MP Garth Turner joins the Liberal Party.
March 21, 2007: Liberal MP Joe Comuzzi is expelled from the caucus for supporting the Conservative Budget.
April 12, 2007: Bloc Québécois MP Louise Thibault leaves the Bloc Québécois to sit as an Independent, citing dissatisfaction with Bloc leader Gilles Duceppe as her reason for leaving.
April 12, 2007: Liberal and Green Party leaders Stéphane Dion and Elizabeth May agree not to run candidates against each other in the upcoming election. The Liberals will not run a candidate in Central Nova and the Greens will not run a candidate in Saint-Laurent—Cartierville.
May 3, 2007: Bill C-16 receives Royal Assent. This bill states that the next election must be held on October 19, 2009, unless there is an earlier dissolution.
June 5, 2007: Bill Casey, the longest-serving member within the Conservative caucus, is expelled for voting against the budget. He now sits as an independent member.
June 26, 2007: Independent MP Joe Comuzzi joins the Conservative Party.
August 30, 2008: Harper meets with Jack Layton, the leader of the New Democrats in an attempt to find common ground between the NDP and the Conservatives.
September 1, 2008: Harper meets with Stéphane Dion, the leader of the Liberals, in an attempt to find common ground between the Liberals and the Conservatives, and avert the dissolution of Parliament, allowing the fall session to continue as planned. However, after a twenty-minute meeting at 24 Sussex Drive, the PM's official residence, Dion emerges stating there is no common ground between the two parties, and that an election is certain.
September 5, 2008: The Prime Minister's Office (PMO) announces that Prime Minister Harper will visit the Governor General at 9 am on September 7, 2008 to ask for the dissolution of the 39th Parliament and a general election on October 14, 2008.
September 7, 2008: At 8:20 am Eastern Daylight Time, Prime Minister Stephen Harper leaves his official residence at 24 Sussex Drive, and takes a short drive to Rideau Hall, the Governor General's official residence. There, he asks the Governor General, Michaëlle Jean, to call a general election on October 14, 2008. She accepts the request.