Complex sentence: Wagner was elected as a Democrat to the United States Senate in 1926, reelected in 1932,1938, and again in 1944, and served from 1927 until his resignation on June 28,1949, due to ill health.
Split into simpler sentences: Wagner was elected as a Democrat to the United States Senate in 1926, and reelected in 1932,1938, and 1944. He resigned on June 28,1949, due to ill health.