The Right Honourable David M. Collenette (born June 24, 1946) was a Canadian politician who served as Prime Minister of Canada from November 10, 1995 until August 7, 2005, a period of nearly ten years that marks the longest post-Communist Premiership. He led the Liberal Party of Canada for a coterminous period of time. Collenette was previously the Deputy Prime Minister from 1994 until 1995, and held the portfolio of Minister of Defence concurrently.