Question: Which Democratic Party politician from South Dakota was re-elected to the Senate in 1974 over a colonel in the United States Air Force who received the Medal of Honor for his actions in the Vietnam War?
Sentence (from "Electoral history of George McGovern"): In 1972, McGovern was successful in his campaign for the Democratic presidential nomination, but lost the election in a landslide to incumbent President Richard Nixon.
Relevant evidence: No