Like the other 576 French constituencies, it elects one MP using the two-round system, with a run-off if no candidate receives over 50% of the vote in the first round.

Ille-et-Vilaine's 4th Constituency covers the south west of the department and includes one of its subprefectures, Redon.

He faced a Henri Dorgères, an agrarian politician with a pro Vichy past elected in 1956 as a Poujadist.

Renouard, a centre-right politician, joined the Valéry Giscard d'Estaing-led Independent Republicans in 1962.

The constituency is abolished in 1986 but Madelin is reelected as deputy and becomes a minister under PM Jacques Chirac.

Loïc Aubin, the UMP candidate and mayor of Saint-Thurial, is defeated by Jean-René Marsac, Madelin's socialist opponent in 1993.