Complex sentence: Mandel was elected to the Chamber of Deputies from Gironde (Bordeaux) in 1919, lost his seat when the Cartel des gauches swept the 1924 elections but returned to the Chamber in 1928.
Split into simpler sentences: Mandel was elected to the Chamber of Deputies from Gironde (in Bordeaux) in 1919. He lost his seat when the Cartel des Gauches swept the 1924 elections but returned to the Chamber in 1928.