Timeline
- December 12, 2008: Calgary-Mountain View MLA David Swann wins the Leadership of the Alberta Liberals replacing Kevin Taft.
- May 15, 2009: Calgary-Glenmore MLA Ron Stevens resigns to accept a judgeship.
- July 16, 2009: The Alberta Greens is deregistered by Elections Alberta.
- July 18, 2009: Fort McMurray-Wood Buffalo MLA Guy Boutilier is removed from the Progressive Conservative caucus.
- August 29, 2009: Robert Leddy is chosen as the interim leader of the Alberta Party replacing Bruce Stubbs.
- September 14, 2009: A by-election in Calgary-Glenmore elects Wildrose Alliance interim leader Paul Hinman.
- October 17, 2009: The Wildrose Alliance selects Danielle Smith to replace Paul Hinman as leader in a convention in Edmonton.
- November 7, 2009: A leadership review of Premier Ed Stelmach is held at a PC convention in Edmonton. He garners 77.4% support.
- January 4, 2010: MLAs Rob Anderson and Heather Forsyth defect from the PC to the Wildrose Alliance.
- January 28, 2010: Edwin Erickson is acclaimed as leader of the Alberta Party replacing Robert Leddy.
- February 24, 2010: Alberta Boundaries Commission releases its interim report on new provincial boundaries.
- April 12, 2010: Calgary-Currie MLA Dave Taylor leaves the Liberal caucus to sit as an independent.
- June 25, 2010: PC, turned Independent, MLA Guy Boutilier joins the Wildrose Alliance.
- November 22, 2010: Edmonton-Meadowlark MLA Raj Sherman is removed from the Progressive Conservative caucus.
- November 24, 2010: Sue Huff becomes interim Alberta Party leader after Edwin Erickson resigns.
- December 1, 2010: The Legislative Assembly passes a bill outlining 87 electoral districts, up from the current 83. The last re-distribution was in 2004.
- January 24, 2011: Calgary-Currie MLA Dave Taylor sits as Alberta Party's first MLA.
- January 25, 2011: Premier Ed Stelmach announces his intention not to run for re-election, and announces he will resign his post as Premier when a successor has been chosen at a leadership convention.
- February 1, 2011: David Swann, Leader of the Alberta Liberal Party, announces his intention to step down as leader after the spring 2011 legislative session, though still acting as an MLA from Calgary-Mountain View.
- May 28, 2011: Glenn Taylor is elected leader of the Alberta Party.
- June 26, 2011: The Wildrose Alliance Party votes to change its name to Wildrose Party.
- September 10, 2011: Raj Sherman is elected leader of the Liberal Party.
- September 12, 2011: Independent MLA Raj Sherman joins the Liberal caucus.
- October 1, 2011: Alison Redford is elected leader of the PC Association.
- October 7, 2011: Redford is sworn in as premier.
- November 21, 2011: Liberal Bridget Pastoor crosses the floor to join the PC caucus.
- December 6, 2011: Third and final reading of Bill 21, legislating a general election between March 1 and May 31, 2012.
- December 22, 2011: The Evergreen Party of Alberta is registered with Elections Alberta, Larry Ashmore is the leader.
- January 27, 2012: Vermilion-Lloydminster MLA Lloyd Snelgrove leaves the PCs to sit as an independent.
- March 2012: Olds-Didsbury-Three Hills MLA Richard Marz resigns.
- March 26, 2012: 27th Alberta Legislative Assembly is dissolved, and the writs are dropped.
- April 9, 2012: Nominations close at 2:00 pm MT (UTC−6), with 429 people running in 87 ridings.
- April 12, 2012: A leader's debate is hosted by the Alberta media and news outlets at 6:30 pm MT. It was broadcast on multiple television and radio stations, Redford, Sherman, Smith, and Mason were in attendance.
- April 19, 2012: Advance polls open 9:00 am to 8:00 pm MT.
- April 20, 2012: Advance polls open 9:00 am to 8:00 pm MT.
- April 21, 2012: Advance polls open 9:00 am to 8:00 pm MT.
- April 23, 2012: Election Day
- Polls open 9:00 am to 8:00 pm MT.
- Media outlets declare a PC majority at 9:00 pm.
- May 3, 2012: Official announcement of the results.
Read more about this topic: Alberta General Election, 2012