[2] Haldimand County had been an electoral district in the Legislative Assembly of Upper Canada,[3] and its boundaries were not altered by the Union Act.

Those boundaries had been set by a statute of Upper Canada in 1798: In 1826, the townships of Walpole and Rainham were annexed to Haldimand from the County of Norfolk, to be closer to the new district town and courthouse.

The district was abolished on July 1, 1867, when the British North America Act, 1867 came into force, creating Canada and splitting the Province of Canada into Quebec and Ontario.

[8] It was succeeded by electoral districts of the same name in the House of Commons of Canada[9] and the Legislative Assembly of Ontario.

[10] This article incorporates text from this source, which is in the public domain: An act for the better division of this province, SUC 1798 (38 Geo.