He was elected to the United States Senate in 1952 to fill the vacancy caused by the death of Arthur H. Vandenberg, replacing Blair Moody, who had been appointed to the post. He served the remainder of Vandenberg's term, from November 5, 1952, to January 3, 1953. He was also elected in 1952 for the term commencing January 3, 1953, defeating Moody in both elections. He served until January 3, 1959, having been defeated for reelection to a second term in 1958 by Philip Hart.
During his tenure, he served as the only member of the Subcommittee on Korean War Atrocities, investigating war crimes committed during the Korean War.[2]
Later career
After leaving Congress, Potter engaged as an industrial consultant and international securities executive. In his 1965 memoir, Days of Shame, he outlined the battle between moderate Republicans and Democrats to contend with Sen. Joseph R. McCarthy. Potter was a close confidante of President Dwight D. Eisenhower on this and other issues.
^Potter, Charles E. (December 3, 1953). "Korean War Atrocities"(PDF, online). United States Senate Subcommittee on Korean War Atrocities of the Permanent Subcommittee of the Investigations of the Committee on Government Operations. US GPO. Retrieved 2008-01-18.