One more try. Please think, don't just react. If:
a) You fear that Harper might get a majority; and
b) That he will then use that majority to suppress political speech (y'know, the good kind);
then WHY would you want to establish the precedent that cable channels espousing unpopular views can be banned? Because you might end up on the banning end.
Or, as Ron Hawkins might say: "Sometimes, it's wise, to know which way the gun is pointed, before, you yell, I see the whites of their eyes."