In 1933, the two ridings were re-united, and the new Timiskaming riding consisted of the territorial district of Timiskaming (excluding the township of Keefer and all townships east of Keefer and adjacent to the north boundary of Timiskaming district); and part of the territorial district of Nipissing.

In 1966, it was redefined to consist of parts of the territorial districts of Timiskaming, Sudbury and Nipissing.

In 1976, it was redefined to consist of the southeastern part of the Territorial District of Cochrane, the northern part of the Territorial District of Nipissing; and the Territorial District of Timiskaming (excluding that part lying westerly of the Townships of Cleaver and Fallon).

In 1987, it was redefined to consist of the southeastern part of the Territorial District of Cochrane; the northern part of the Territorial District of Nipissing; the eastern part of the Territorial District of Sudbury; and the Territorial District of Timiskaming (excluding the part lying west of the west boundary of the geographic Townships of Cleaver and Fallon.)

The electoral district was renamed in 1993 to "Timiskaming—French River", and abolished in 1996 when it was incorporated into Timiskaming—Cochrane riding.