Each ward may choose a number of common councilmen. A common councilman must be a registered voter in a City ward, own a freehold or lease land in the City, or reside in the City for the year prior to the election. The individual must also be over 21; a Freeman of the City; and a British, Irish, Commonwealth or EU citizen. Common Council elections are held every four years, most recently in March 2017. Common councilmen may use the postnominals CC after their names.