WI: 2006 Ontario terror plot had been successful?

In 2006 a spy leaked information regarding a terror plot to shoot up the Canadian parliament and behead the prime minister. What if the spy had not succeeded and the terror plot had happened?
 
I don't see it succeeding fully. Might be similar to the Parliament shooting last year except with a few more dead and wounded. Would still be a huge tragedy but parliament would be deadlocked with the conservatives wanting to increase security but without the majority they probably won't get it passed. I can easily see the other parties all blaming Harper and try to bring it up in the 2008 election or whenever the next election is.
Couldn't tell you any other details or the long term effects but the more liberal of the Population would be even more uppity than they are now.
 
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