An electoral division (ED, Irish: toghroinn[1]) is a legally defined administrative area in the Republic of Ireland, generally comprising multiple townlands, and formerly a subdivision of urban and rural districts. Until 1996, EDs were known as district electoral divisions (DEDs, toghroinn ceantair[2]) in the 29 county council areas and wards in the five county boroughs.[3] Until 1972, DEDs also existed in Northern Ireland. The predecessor poor law electoral divisions were introduced throughout the island of Ireland in the 1830s. The divisions were used as local-government electoral areas until 1919 in what is now the Republic and until 1972 in Northern Ireland.