It consisted initially of the City of London, Ontario.
In 1914, it was redefined to exclude parts of the former township of London, which was now a part of the city.
In 1924, it was redefined as consisting of that part of the city of London lying west of and south of a line following (from the north) Adelaide Street and Oxford Street, the east side of Wolsley Barracks area, Middleton Avenue, Glasgow Street, Lorne Avenue, Burbrook Place, Dundas Street, Swinyard Street, Pine Street, Elm Street, Trafalgar Street, Adelaide Street, the south branch of the River Thames, Beverly Street, and Wellington Street south to the south boundary of the city.
The electoral district was abolished in 1966 when it was redistributed between London West and London East ridings.
|- |Hon. John Carling |align="right"|1,114 |- |Mr. Peacock |align="right"|266 |}
|- |Hon. John Carling |align="right"|1,101 |- |Mr. MacMahon |align="right"|797 |}
|- |John Walker |align="right"|1,269 |- |John Carling |align="right"|1,208 |}
On Mr. Walker being unseated, 9 September1874: |- |James Harshaw Fraser |align="right"|1,228 |- |Samuel Peters |align="right"|1,100 |}
|- |Hon. John Carling |align="right"|1,407 |- |John Walker |align="right"| 1,343 |}
|- |Hon. John Carling |align="right"|1,485 |- |John Campbell |align="right"|1,238 |}
|- |Hon. John Carling |align="right"| 2,013 |- |Charles S. Hyman |align="right"|1,974 |}
|- |C.S. Hyman |align="right"|2,037 |- |Hon. John Carling |align="right"| 1,854 |}
On the election being declared void: |- |John Carling |align="right"| |- |Charles S. Hyman |align="right"| |}
|- |Thomas Beattie |align="right"|2,325 |- |C.S. Hyman |align="right"| 2,284 |}
|- |Charles S. Hyman |align="right"|2,812 |- |Thomas Beattie |align="right"|2,265 |- |Robert Roadhouse |align="right"|236 |}
|- |Charles S. Hyman |align="right"|4,302 |- |William F. Gray |align="right"|4,278 |}
On Mr. Hyman being appointed Minister of Public Works, 22 May 1905: |- |C.S. Hyman |align="right"|4,581 |- |William Gray |align="right"| 4,251 |}
On Mr. Hyman's resignation, 11 April 1907:
|- |Thomas Beattie |align="right"|3,209 |- |J.D. Jacobs |align="right"|2,174 |}
|- |Thomas Beattie |align="right"|4,121 |- |John Wiley McCandless |align="right"| 2,987 |} |- |Thomas Beattie |align="right"| 5,263 |- |John Millar McEvoy |align="right"| 3,352 |}
On Mr. Beattie's death, 2 December 1914: |- |William Gray |align="right"|acclaimed |}
|- |Hume Cronyn |align="right"|11,136 |- |George Sutton Gibbons |align="right"|6,783 |}
|- |John Franklin White |align="right"|9,730 |- |Charles Ross Somerville |align="right"|7,974 |- |Arthur Mould |align="right"|4,252 |}
|- |John Franklin White |align="right"|12,260 |- |Edgar Sydney Little |align="right"|7,777 |- |John Colert |align="right"|2,405 |}
|- |John Franklin White |align="right"|12,249 |- |William John Stevenson |align="right"|11,404 |}
|- |John Franklin White |align="right"|13,981 |- |Jared Vining |align="right"|9,698 |}
|- |Frederick Cronyn Betts |align="right"|10,911 |- |George Arthur Porte Brickenden |align="right"|8,628 |- |John Franklin White |align="right"|3,814 |- |Everett Orlan Hall |align="right"|3,041 |- |George Albert Wenige |align="right"|2,101 |- |Clifford Hamilton Reason |align="right"|1,203 |- |Hugh Allan Stevenson |align="right"|406 |}
On Mr. Betts' death, 7 May 1938: |- |Hon. Robert James Manion |align="right"|11,364 |- |Everett Orlan Hall |align="right"|8,166 |}
|- |Joseph Allan Johnson |align="right"|15,824 |- |Thomas Ford Kingsmill |align="right"|12,534 |- |Everett Orlan Hall |align="right"|3,762 |}
|- |Park A. Manross |align="right"|16,766 |- |Joseph Allan Johnston |align="right"|13,421 |- |Everett Orlan Hall |align="right"|4,901 |- |Arthur Mould |align="right"| 225 |}
|- |Alex Jeffery |align="right"|16,427 |- |Park Manross |align="right"|14,988 |- |Everett O. Hall |align="right"|4,532 |}
|- |Robert Weld Mitchell |align="right"| 15,254 |- |S. Floyd Maine |align="right"|12,869 |- |Gwen Pemberton |align="right"| 2,748 |- |Allison Grant Campbell |align="right"|662 |}
|- |G. Ernest Halpenny |align="right"|19,804 |- |Hugh Mackenzie |align="right"|11,110 |- |Gwen Pemberton |align="right"| 2,714 |}
|- |G. Ernest Halpenny |align="right"|24,276 |- |Hugh Alexander Mackenzie |align="right"|9,107 |- |E.O. Hall |align="right"|2,598 |} |- |G. Ernest Halpenny |align="right"|16,096 |- |Harry Quigley |align="right"|11,084 |- |John Gelleta |align="right"|3,679 |- |Larry Wilcocks |align="right"| 447 |}
|- |Jack A. Irvine |align="right"| 15,700 |- |Clarence M. Peterson |align="right"|14,262 |- |Paddy O'Brien |align="right"| 3,335 |- |Lloyd H. Alford |align="right"| 599 |}
|- |Jack Irvine |align="right"|13,763 |- |Margaret Fullerton |align="right"|11,164 |- |Clayton Fee |align="right"|4,412 |- |Albert W. Plumb |align="right"|422 |- |Thomas Morris |align="right"|271 |}