Complex sentence: Arthur Sauvé, his father, had been leader of the Conservative party during the Premiership of Liberal Louis-Alexandre Taschereau and left the provincial politics when elected to the Canadian Parliament in 1930 and became Postmaster General in the R. B. Bennett government.
Split into simpler sentences: Arthur Sauvé, his father, had been leader of the Conservative Party during the Premiership of Liberal Louis-Alexandre Taschereau. He transferred to federal politics in 1930 and became Postmaster General in the R. B. Bennett government.