It initially consisted of the territorial district of Manitoulin and the part of the territorial district of Algoma lying east of a line drawn from south to north along the limit between the townships of Lefroy and Plummer Additional and due north to the northern limit of Algoma.

In 1904, the territorial district of Manitoulin was transferred out of the riding.

In 1914, it was redefined to consist of the eastern part of the territorial district of Algoma, excluding those parts included in Timiskaming, the western part of the territorial district of Sudbury, and the territorial district of Manitoulin

In 1933, it was redefined to consist of the territorial district of Manitoulin, and the parts of the territorial districts of Algoma and Sudbury.

The electoral district was abolished in 1966 when it was redistributed between Algoma, Nickel Belt and Timmins—Chapleau ridings.

Members of Parliament

This riding elected the following members of the Canadian House of Commons:

1. Albert Edward Dyment, Liberal (1904-1908)
2. William Ross Smyth, Conservative (1908-1917)
3. George Brecken Nicholson, Unionist (1917-1921)
4. John Carruthers, Liberal (1921-1925)
5. George Brecken Nicholson, Conservative (1925-1926)
6. Beniah Bowman, United Farmers of Ontario (1926-1930)
7. George Brecken Nicholson, Conservative (1930-1935)
8. Thomas Farquhar, Liberal (1935-1948)
9. Rt. Hon. Lester B. Pearson, Liberal (1948-1968)14th Prime Minister of Canada

Election results

|- |DYMENT, Albert Edward |align="right"| 2,698 |- |TURNER, Byron H. |align="right"|2,120 |}

|- |SMYTH, William Ross |align="right"|2,849 |- |DYMENT, Albert Edward |align="right"|2,808 |}

|- |SMYTH, William Ross |align="right"| 3,898 |- |REGAN, John Lionel |align="right"|3,716 |}

|- |NICHOLSON, George Brecken |align="right"| 4,742 |- |O'CONNOR, Lawrence |align="right"|3,596 |}

|- |CARRUTHERS, John |align="right"| 5,007 |- |NICHOLSON, George Brecken |align="right"| 4,194 |- |WRIGHT, John Egerton |align="right"| 3,095 |}

|- |NICHOLSON, George Brecken |align="right"|6,209 |- |CARRUTHERS, John |align="right"|5,665 |} |United Farmers |BOWMAN, Beniah |align="right"|6,909 |- |NICHOLSON, George Brecken |align="right"|6,143 |}

|- |NICHOLSON, George Brecken |align="right"|7,231 |- |BOWMAN, Beniah |align="right"|6,934 |}

|- |FARQUHAR, Thomas |align="right"| 5,816 |- |CARD, William James |align="right"| 2,541 |- |BROMLEY, Kenneth James Webb |align="right"| 1,362 |- |PROVENCHER, Isadore Ernest |align="right"| 833 |}

|- |FARQUHAR, Thomas |align="right"|5,565 |- |CAMPBELL, John Lorne |align="right"|3,126 |- |MCVEY, J.W. |align="right"|1,635 |}

|- |FARQUHAR, Thomas |align="right"|4,855 |- |AUSTIN, Allan McNiece |align="right"|3,610 |- |STRAIN, William Luke |align="right"|1,468 |}

On Mr. Farquar being called to the Senate, 10 September 1948: |- |PEARSON, Hon. Lester B. |align="right"|4,685 |- |CALLAGHAN, Lorne D. |align="right"|2,382 |- |FITZGERALD, John J. |align="right"|1,236 |}

|- |PEARSON, Hon. Lester B. |align="right"| 6,184 |- |TURNER, Grant H. |align="right"| 2,908 |- |THORNTON, George |align="right"| 2,202 |}

|- |PEARSON, Hon. Lester Bowles |align="right"| 7,494 |- |BISHOP, George H. |align="right"| 3,877 |}

|- |PEARSON, Lester B. |align="right"| 8,574 |- |MULLIGAN, H. Merton |align="right"|5,757 |- |REID, Martin S. |align="right"| 2,156 |}

|- |PEARSON, Lester B. |align="right"| 11,240 |- |SCULLY, Basil |align="right"| 8,208 |- |CORBETT, Walter James |align="right"| 2,309 |}

|- |PEARSON, Lester B. |align="right"| 11,934 |- |BERTHELOT, Alex |align="right"| 5,631 |- |CORK, Cam |align="right"| 3,168 |}

|- |PEARSON, Lester B. |align="right"| 10,817 |- |JEWELL, Paul |align="right"|6,146 |- |QUENNEVILLE, Irénée John |align="right"| 2,016 |- |DONAHUE, Bennett |align="right"| 1,751 |}

|- |PEARSON, Lester B. |align="right"| 9,268 |- |ALDRED, Joel |align="right"| 5,793 |- |STUART, Walter |align="right"| 2,053 |}

External links

• Riding history from the Library of Parliament