Question: Colin Francis McIsaac was a part of which party that is sitting at the center of the Canadian political spectrum?

Context paragraphs:
Liberalism in Russia: Within Russian political parties, liberal parties advocate the expansion of political and civil freedoms and mostly oppose Vladimir Putin.  In Russia, the term "liberal" can refer to wide range of politicians – simultaneously to Thatcherism/Reaganomics-related pro-capitalism conservative politicians (they are related to 1990s shock therapy "liberal" reforms), to centre-right liberal politicians (as in European political spectrum) and to left-liberal politicians (as in the US political spectrum).  The term "liberal democrats" is often used for members of the far-right nationalist part, the Liberal Democratic Party of Russia.  There are Russian opposition and pro-government liberal political parties in Russia.  Pro-government liberal politicians support Putin's liberal policy in economics.

Syncretic politics: Syncretic politics or spectral-syncretic refers to politics outside the conventional left–right political spectrum.  The term "syncretic politics" has been derived from the idea of syncretism (syncretic religion).  The main idea of syncretic politics is that taking political positions of neutrality by combining elements associated with the left and right can achieve a goal of reconciliation.  Since this umbrella term is defined by the negation of the two standard poles of a given one-dimensional political spectrum, it refers to quite heterogeneous approaches.

Political radicalism: The term political radicalism (or simply, in political science, radicalism) denotes political principles focused on altering social structures through revolutionary or other means and changing value systems in fundamental ways.  Derived from the Latin "radix" (root), the denotation of radical has changed since its eighteenth-century coinage to comprehend the entire political spectrum—yet it retains the "change at the root" connotation fundamental to revolutionary societal change.  Historically, radicalism has referred exclusively to the radical left (under the single category of far-left politics) and rarely incorporating far-right politics - though these may have revolutionary elements; the prominent exception is in the United States where some consider radicalism to include both political extremes of the radical left and the radical right.  In traditional labels of the spectrum of political thought, the opposite of radical on the "right" of the political spectrum is termed "reactionary".

Progressive Conservative Party: Progressive Conservative Party refers to a group of Canadian political parties that are technically distinct, positioned on the centre-right of the political spectrum:

Liberal Party of Canada: The Liberal Party of Canada (French: "Parti libéral du Canada" ), colloquially known as the Grits, is the oldest federal political party in Canada.  The party espouses the principles of liberalism and generally sits at the centre of the Canadian political spectrum.  The Liberal Party is traditionally positioned to the left of the Conservative Party of Canada and to the right of the New Democratic Party (NDP).

Confederation of Regions Party of Canada: The Confederation of Regions Party (CoR) was a right-wing Canadian political party founded in 1984 by Elmer Knutson.  It was founded as a successor to the Western Canada Federation (West-Fed), a non-partisan organization, to fight the Liberal Party of Canada.  The CoR aimed to fill the void on the right of the political spectrum left by the decline of the Social Credit Party of Canada and the growing unpopularity among westerners of the Progressive Conservative Party of Canada of Brian Mulroney.

Conservative Party of Canada: The Conservative Party of Canada (French: "Parti conservateur du Canada" ), colloquially known as the Tories, is a political party in Canada.  It is positioned on the right of the Canadian political spectrum.  The party's leader is Andrew Scheer, who serves as Leader of the Official Opposition.

Colin Francis McIsaac: Colin Francis McIsaac, KC (February 14, 1854 – March 14, 1927) was a Nova Scotia lawyer and political figure.  He represented Antigonish in the Canadian House of Commons from 1895 to 1905 and Antigonish—Guysborough from 1922 to 1925 as a Liberal member.

Socialist Party of Ontario: The Socialist Party of Ontario (SPO) is an unregistered political party in Ontario, Canada.  SPO was founded in 2011 by political activists, trade unionists, community leaders, feminists and socialists, many of whom were former members of the Ontario New Democratic Party (NDP).  They decided to launch a new leftist party to challenge the NDP's shift to the centre of the political spectrum.  Modelled after Québec solidaire and the United Left Alliance in Ireland, the party adopted the name of the historic Socialist Party of Canada, though maintained no connections to the former entity.  The party fielded five candidates in the October 2011 Ontario general election and two candidates in the 2014 Ontario general election before becoming inactive and, by 2016, de-registered by the provincial elections authority.

Independent American Party: The Independent American Party (IAP) is a constitutionally based political party in the United States.  It began as the Utah Independent American Party.  The founders claim to have been inspired by a 1968 speech given by Ezra Taft Benson, former United States Secretary of Agriculture and later president of the LDS Church, entitled "The Proper Role of Government".  The party's first platform was based on Benson's beliefs.  These 15 principles for the proper role of government, taken from his speech, are held as the IAP's foundational principles.  The IAP is a political party which has placed itself in the center of the political spectrum--like the U.S Constitution--right in the middle between the extremes of zero government or anarchy on the far right, and total government or tyranny on the far left.  The Independent American Party of Nevada is affiliated with the Constitution Party of the United States.  The IAP of Nevada has elected several candidates to local office, such as District Attorney, County Commissioner,County Clerk, and other local offices.  (Officers elected in other States on the Independent American Party ticket or the U.S. Constitution Party need to be added here by party members in other states.)

Supporting paragraphs: Colin Francis McIsaac Liberal Party of Canada
Answer: The Liberal Party of Canada