Question: Charles "Chuck" Strahl, PC, is a Canadian businessman and politician, first elected for the Reform Party, he was the leader of the Democratic Representative Caucus that left the Canadian Alliance in opposition to leadership of which former Canadian politician, and a member of the Conservative Party of Canada?

Context paragraphs:
Dick Harris: Richard M. Harris (born September 6, 1944) is a Canadian politician.  He was a Member of Parliament from 1993 to 2015 and sat as a member of the Conservative Party of Canada.  He was previously member of the Reform Party of Canada and the Canadian Alliance.  From 2004 to 2015, he represented the electoral district of Cariboo—Prince George, and formerly represented Prince George–Bulkley Valley.  He was first elected during the 1993 federal election and was re-elected in 1997, 2000, 2004, 2006, 2008 and 2011.  He challenged Reform Party leader Preston Manning for leadership when Manning proposed merging the party with the Progressive Conservative Party of Canada.  He later campaigned for Stockwell Day to become leader.  The most prominent position he held with his party was Chief Opposition Whip from 2001 to 2002.  He generated controversy when he appointed an unelected, Conservative Party member to represent a neighbouring electoral district in governmental affairs, though the electoral district had an elected Member of Parliament, but from an opposition party.  In Fiscal Year 2009-10 he was the top spending Member of Parliament, and had the largest hospitality and lowest advertising expenditures of any house member.

Dale Johnston: F. Dale Johnston (born November 14, 1941 in Ponoka, Alberta) is a former Canadian politician.  He began his career in politics in 1986 as a councillor in Ponoka, and he then became reeve in 1989.  In Canadian federal election, 1993, he was elected into the House of Commons of Canada.  He was elected as a member of the Reform Party of Canada in the riding of Wetaskiwin.  He was re-elected in the Canadian federal election, 1997, and in the Canadian federal election, 2000 (as a member of the Canadian Alliance) and again in the Canadian federal election, 2004 (as a member of the Conservative Party of Canada).  A farmer, he served as Chief Opposition Whip and Whip of the Conservative Party from 2002 to 2004 and twice more in 2004.  He has also been the Opposition critic to the Minister of Labour and to Parliamentary Affairs.  Currently he is Vice-Chair of the Standing Committee on Procedure and House Affairs.  Johnston retired from parliament at its dissolution prior to the 2006 federal election.

The New Canada: The New Canada is a Canadian political literature book written by Reform Party of Canada founder and leader Preston Manning and published by Macmillan Canada.  The book explains the personal, religious, and political life of Preston Manning and explains the roots and beliefs of the Reform Party.  At the time of its publishing in 1992, Reform had become a popular populist conservative party in Western Canada after the mainstream Progressive Conservative Party of Canada was collapsing in support and in 1991 decided to expand eastward into Ontario and the Maritimes.  One year later the PC party collapsed in the 1993 federal election, allowing the Reform Party to make political history in Canada, deplacing the PCs as the dominant conservative party in Canada.  Reform, later renamed the Canadian Alliance, merged with the PC Party in 2003, to form a united right-wing alternative to the governing Liberal Party of Canada, named the Conservative Party of Canada which has dropped many of the populist themes that the Reform Party had.

Preston Manning: Ernest Preston Manning, {'1': ", '2': ", '3': ", '4': "} (born June 10, 1942) is a conservative Canadian politician.  He was the only leader of the Reform Party of Canada, a Canadian federal political party that evolved into the Canadian Alliance.  He sat in Parliament for the Canadian Alliance until his retirement from federal politics in 2002, after which it in turn merged with the Progressive Conservative Party to form today's Conservative Party of Canada.  Manning sits as an advisor to Canada's Ecofiscal Commission.

Gary Lunn: Gary Vincent Lunn, (born May 8, 1957 in Trail, British Columbia) is a former Canadian Member of Parliament for the British Columbia riding of Saanich—Gulf Islands.  He served in the House of Commons from 1997 to 2011, first as a member of the Reform Party of Canada and subsequently as a member of the Canadian Alliance and the Conservative Party of Canada.  He was Minister of State (Sport) in the Cabinet of Prime Minister Stephen Harper and Official Opposition Critic for Métis and Non-Status Indians, Minister of State for Northern Development, and Critic of the Secretary of State for Human Resources Development.  Lunn lost his seat in the 2011 federal election in Canada in an upset to the Leader of the Green Party, Elizabeth May.

Garry Breitkreuz: Garry W. Breitkreuz (pronounced Bright-Krites) (born October 21, 1945 in Yorkton, Saskatchewan) is a Canadian politician.  He was the Conservative Party of Canada member of the House of Commons of Canada for Yorkton—Melville from 1993 to 2015.  He was formerly a member of the Reform Party of Canada (1993–2000) and the Canadian Alliance (2000–2003).  While he had no formal position in the cabinet, as an Opposition member he was Deputy House Leader of the Opposition, Conservative Party Deputy House Leader, Deputy Whip of the Official Opposition, Chief Opposition Whip, and Critic to the Solicitor General.

Chuck Strahl: Charles "Chuck" Strahl, PC (born February 25, 1957) is a Canadian businessman and politician.  He was a Member of Parliament from 1993 to 2011.  First elected for the Reform Party, he was the leader of the Democratic Representative Caucus that left the Canadian Alliance in opposition to Stockwell Day's leadership.  When the Conservatives won power in 2006, he became a prominent cabinet minister and served as Minister of Agriculture, Indian and Northern Affairs, and Transportation.

Stockwell Day: Stockwell Burt Day Jr., PC, (born August 16, 1950) is a former Canadian politician, and a member of the Conservative Party of Canada.  He is a former cabinet minister in Alberta, who later served as leader of the Canadian Alliance from 2000 to 2001.  Day was MP for the riding of Okanagan—Coquihalla in British Columbia and the president of the Treasury Board.  He was widely seen as a prominent voice for social conservatives within the Conservative Party.  On March 12, 2011, Day announced that he would not be seeking re-election in the 2011 federal election.

Democratic Representative Caucus: The Democratic Representative Caucus was a parliamentary group consisting of Members of the Canadian Parliament who left the Canadian Alliance in 2001 in protest against the leadership of Stockwell Day.  Following the Alliance's disappointing performance in the 2000 election, Day came under severe criticism from his own party.  Several high-profile Alliance MPs began publicly calling for him to step down.  Through the spring of 2001, several members of the Alliance resigned their shadow cabinet seats, the most high-profile resignation being that of deputy leader Deborah Grey.

Ted White (politician): Edward Alexander (Ted) White (born 18 April 1949 in Southampton, England) was a member of the Canadian House of Commons.  He was first elected in the North Vancouver riding in 1993 as a Reform Party of Canada candidate in the 35th Canadian Parliament.  He was re-elected in 1997 and 2000.  During his years as a Member of Parliament, his Reform party would become known as the Canadian Alliance party, then become part of the Conservative Party of Canada.

Supporting paragraphs: Chuck Strahl Stockwell Day
Answer: Stockwell Day