I'm open to all suggestions. That might be a good suggestion. I don't know how many people living abroad pay taxes in Canada. Perhaps a certain number of them do.
However, I'd like to point out that when their name is on the International Register of Electors, voters really need to live abroad if they want to vote. Some Canadians go abroad temporarily in the winter: We call them snowbirds. They're considered to be national voters. They vote using a special ballot, but they're not in the same category. They use a different mechanism.