The Green Party of Canada holds a national leadership election every 4 years, as stipulated under the party's current constitution. Ballots are always mailed out in advance to all Green Party of Canada "members in good standing" - allowing the option of voting by mail to all party members who do not wish to attend the convention in person. The party uses an instant-runoff voting (IRV) ballot system for the election of its leader and councillors and a standard yes-or-no ballot for voting on constitutional amendments.