Cantonale elections to renew canton general councillors were held in France on 10 and 17 March 1985.
The left, in power since 1981, lost 10 departments.
As a result, the right controlled 69 out of 95 departments.
There is a 10% threshold (10% of registered voters) needed to proceed to the second round.
Runoff results missing Alain Lancelot, Les élections sous la Ve République, PUF, Paris, 1988