This pattern was firmly established in the case of local government, where gerrymandered ward boundaries rigged local government elections to ensure unionist control of some local councils with nationalist majorities. In a number of cases, most prominently those of the Corporation of Derry, Omagh Urban District, and Fermanagh County Council, ward boundaries were drawn to place as many Catholics as possible into wards with overwhelming nationalist majorities while other wards were created where unionists had small but secure majorities, maximising unionist representation.