This may be of interest to Canadian citizens living outside our borders for more than five years. If you are able and willing to travel to the last riding in which you resided in Canada, with proof of your ID, your Canadian citizenship, and of your residence in that riding (an old utility bill or tax assessment from CRA might do that trick), you can in fact vote either in advance poll or on election day.
http://www.cbc.ca/news/politics/elections-canada-expat-sault-ste-marie-vote-1.3266434
Maybe bring a printed copy of the above CBC story with you.
Your chance to help vote Harper into the oblivion he and his government so richly deserve. For more reasons than I have space to list here, but we can start with the FATCA IGA for openers.