He was elected to the Ontario legislature in the
1975 provincial election, defeating incumbent
Progressive Conservative John Clement by 172 votes in the
Niagara Falls riding. He was re-elected by greater margins in the elections of
1977 and
1981. The Ontario Liberal Party, which had been out of office since 1943, formed a
minority government after the
1985 provincial election. Kerrio, easily returned in Niagara Falls, was appointed
Minister of Natural Resources and
Minister of Energy on June 26, 1985. He was retained in the former portfolio after the
1987 provincial election. In 1988, Kerrio prohibited mineral exploration and mining activities in Ontario provincial parks. He banned large-scale water exports from Ontario in 1989. He also oversaw the reintroduction of the
wild turkey to Ontario. In 1988, Kerrio approved the expansion of the
Red Squirrel logging road, directly through
Anishnabe territory in
Temagami, Ontario, Canada. This prompted a series of roadblocks by the
Teme-Augama Anishnabai and by environmentalists in 1988-1989. Kerrio was a prominent supporter of the "Beck 3" plan to build a third
hydroelectric generating station on the
Niagara River. Kerrio left cabinet on August 2, 1989, and did not run for re-election in 1990.
Cabinet positions ==Later life==