Complex sentence: In federal politics, DeWitt was elected as a Free-Soil candidate to the United States Congress in 1853 and reelected as a candidate of the American Party to Congress in 1855.
Split into simpler sentences: In federal politics, DeWitt was elected as a Free-Soil candidate to the United States Congress in 1853. He was reelected as a candidate of the American Party to Congress in 1855.