It doesn't matter that a big part of the BC Liberal voting base also supports the federal CPC, but it does matter that the party is CALLED "Liberals"?

A vote is an endorsement of a given party's platform and, if that party is the incumbent government, an endorsement of their conduct while in office.

I don't think right, left, or centre have a monopoly on bad behavior. And I don't think anyone who ascribes governing traits based on a party's name should be making comments about "pathetic" arguments.