Complex sentence: He was a U.S. Representative from the 16th Congressional District of Illinois for ten terms from 1961 through 1981, elected as a Republican, and an independent candidate in the 1980 presidential election.
Split into simpler sentences: He was a U.S. Representative from the 16th Congressional District of Illinois for ten terms, from 1961 through 1981. Anderson was a Republican but ran as an independent candidate in the 1980 presidential election.