It is a Conservative Party front group "Voter Outreach Centre" They don't identify themselves as Cons during the call but if you call them back their voicemail does.
I called this number back...the message said it was something to do with Steven Harper. I left a message to never call me again, never!
Although when I googled this number, it showed up as belonging to a video business on Fraser street.
Called at dinner time and I did not pick up and they did not leave a message. 604 is a local area code. I called back and a message identified it as Stephen Harper's constituency. I left a message and told them not to call again as I have already identified that I will not be voting for him and I don't want to be continually called for the next months and months till the election.
Jerks call every day. Too bad my call blocker prevents the phone from ringing. You know you're not wanted when nobody wants to talk to your robocaller.