consisting of a north-central section of the Borough of North York in Metropolitan Toronto, the Town of Richmond Hill, the Township of Markham excluding the Village of Stouffville, and part of the Township of Vaughan. In 1976, it was redefined to consist of the Towns of Markham, Richmond Hill and Vaughan in the Regional Municipality of York. In 1987, it was redefined to consist of the towns of Aurora, Richmond Hill and Vaughan, and the southern part of the Township of King. In 1996, it was redefined to consist of the towns of East Gwillimbury, Georgina, and Newmarket, as well as the part of King north of Side Road 18, shedding a portion to create the new riding of Thornhill. The electoral district was abolished in 2003 when it was redistributed between the electoral districts of Newmarket—Aurora, Oak Ridges—Markham and York—Simcoe. Members of Parliament Election results North Riding of the county of York York North |- bgcolor="white" |align="right" colspan=3|Difference |align="right"|51,088 |align="right"|45.35 |align="right"| |- bgcolor="white" |align="right" colspan=3|Turnout |align="right"|112,665 |align="right"| |align="right"| References Former federal electoral districts of Ontario Aurora, Ontario Federal electoral districts of Toronto Newmarket, Ontario Politics of King, Ontario Politics of Markham, Ontario Politics of Richmond Hill, Ontario Politics of Vaughan