Progressive Conservative Party of Canada - History of the party from inception to demise from Wikipedia. - http://en.wikipedia.org/wiki/Progressive_Conservative_Party_of_Canada
Tories reject unite-the-right motion - The federal Progressive Conservatives have put to bed early a question that some had predicted would hang over their national conference this weekend. They rejected a motion to join forces with the Canadian Alliance. - http://www.cbc.ca/stories/2002/08/24/tories_020824
Tories vote for united right - CBC News report on the vote by the Progressive Conservatives to merge with the Canadian Alliance. - http://www.cbc.ca/stories/2003/12/06/tories_vote031206
Progressive Conservative Leadership Conventions - Tory leadership votes from 1928 to 2003 inclusive. - http://www.parl.gc.ca/information/about/related/Parties/LeaderConv.asp?lang=E¶m=5