This central riding covers more than 12,000 square kilometres and includes
the communities of Pembroke, Deep River, Renfrew, Petawawa, Chalk River
CFB Petawawa, Atomic Energy Canada and Petawawa National Forestry Institute
are also encompassed by the riding.
As a result of the 1999 redistribution, the new riding of Renfrew-Nipissing-Pembroke
combined a third of Lanark-Renfrew with the whole of Renfrew North.
In the former Renfrew South, Liberal Thomas P. Murray won in 1929,
1934, 1937 and 1943.
In Renfrew North, Tory S.J. Hunt won in 1943, 1945, 1948, 1951 and
1955, after which he resigned to run federally. PC candidate Maurice
Hamilton won the 1958 byelection and went on to win again in 1959, 1963,
1967 and 1971. Tory dominance was finally broken by Thomas Murray's
grandson, Sean Conway, who won the seat for the Liberals in every election
from 1975 to 1999.
In the old riding of Lanark, Conservative Doug Wiseman won in 1971,
1975, 1977, 1981 and 1985. Wiseman was re-elected in the former riding
of Lanark-Renfrew in 1987, but the seat went to Tory Leo Jordan in 1990