Complex sentence: He served in that position for seven years, and made his name attacking bookies and underground abortion providers, he lost the race for Attorney General of California in 1946 losing to Frederick N. Howser.
Split into simpler sentences: He served in that position for seven years, and made his name attacking bookies and underground abortion providers. In 1946, he lost the race for Attorney General of California in 1946 to Frederick N. Howser.