The city of Rennes and its suburbs are the original base of the rapid Socialist growth in the department .
The President of the General Council is the Socialist Jean - Louis Tourenne since the French cantonal elections , 2004 .
The city of Rennes and French 's suburbs are the original base of the rapid Socialist growth in the department .
The President of the General Council is the Socialist Jean - Louis Tourenne since the French cantonal elections , 2004 .