What political party operates more liberal?

Canada's Federal Liberal Party is Canada's oldest still existing party, though they are going through a rough patch. They ruled Canada for most of the 20th century making Canada effectively a single party state in many ways.

Politically they wanted and want Liberalized Trade with the USA and closer ties to the USA rather than Britain, smaller military, more social programs and more rights for some of Canada's founding peoples. The 20th century saw them achieve most of that and the Canada we have today is for the most part their creation. Key beliefs have been flexible to enable them to maintain power.

Their largest block of support has come from French Quebec with much less support in Western Canada, which was not needed in our system.