The length of election campaigns can vary, but under the Elections Act, the minimum length of a campaign is 36 days and the maximum length of the campaign is 50 days. Also section 5 of the "Charter" requires that the Parliament sit at least once every twelve months, and thus a campaign would have to conclude in time for returns to be completed and parliament to be called into session within twelve months of the previous sitting. The federal election date must be set on a Monday (or Tuesday if the Monday is a statutory holiday).