It's a possibility. Because our media conspires to keep people IGNORANT of how truly detestable Harper and the gang are.
Both of our parties survive due to systemic media complicity in preserving their respectability.
"Progressives" wouldn't vote Liberal without the warm delusions of the media that wants to create the same meaningless contests as they have in the USA.
That moment when a trio of conservative mainstream US commentators unknowingly blurted out their true thoughts about how terrible a choice Sara Palin was for VP, immediately after speaking positively when officially on-the-air shows how blatant this process is down south. The system that brought us "Timbits over torture" here in Canada is the exact same thing at heart.
You're still just a consumer. A prize for the advertisers. "Democracy" is supposedly one of our fundamental values, so they try to make it as meaningless (but entertaining) as possible.