Question: In which year did this United States Marine Corps aviator, engineer, astronaut, and United States Senator from Ohio orbit the Earth for the first time who won the Senate election in Ohio in 1974?
Sentence (from "United States Senate election in Ohio, 1974"): Incumbent Democratic U.S Senator Howard Metzenbaum was running for re-election his first full term after he was appointed in 1970 by Ohio governor John J. Gilligan to fill out the Senate term of William B. Saxbe, who had resigned to become United States Attorney General.
Relevant evidence: No