Correction: the PC party did *not* dissolve over a single issue.
It split three ways (PC, Reform (later CA), BQ). The PC's and the CA have recently merged.
You do realise that a political party splitting three ways is the equivalent of dissolution. How many voters will care about the differences that separate one tendon from a dead party versus another tendon from the same dead party? They don't. In Canada, they just vote Liberal and be done with it.
Er... not everyone in Canada is a Liberal.
Besides, what happend with Quebec a few years back was kinda similer to the whole CSA thing...