http://www.elections.ca/content.aspx?section=res&dir=loi/fel/cea&document=part01&lang=e#sec6
ELECTORAL RIGHTS
Persons qualified as electors
3. Every person who is a Canadian citizen and is 18 years of age or older on polling day is qualified as an elector.
Disentitlement from voting
4. The following persons are not entitled to vote at an election:
- (a) the Chief Electoral Officer;
- (b) the Assistant Chief Electoral Officer; and
- (c) every person who is imprisoned in a correctional institution serving a sentence of two years or more.
Prohibition
5. No person may
- (a) vote or attempt to vote at an election knowing that they are not qualified as an elector or not entitled to vote under section 4; or
- (b) induce another person to vote at an election knowing that the other person is not qualified as an elector or not entitled to vote under section 4.
Persons entitled to vote
6. Subject to this Act, every person who is qualified as an elector is entitled to have his or her name included in the list of electors for the polling division in which he or she is ordinarily resident and to vote at the polling station for that polling division.
Only one vote
7. No elector who has voted at an election may request a second ballot at that election.