Prescott Bush sought a rematch with Sen. Benton in 1952, but withdrew as the party turned to William Purtell. The death of Senator Brien McMahon later that year, however, created a vacancy and this time the Republicans He defeated the Democratic nominee, Abraham Ribicoff, and was elected to the Senate. A staunch supporter of President Dwight D. Eisenhower, he served until January 1963. He was re-elected in 1956 with 55% of the vote over Democrat Thomas J. Dodd (later U.S. Senator from Connecticut and father of Christopher J. Dodd), and decided not to run for another term in 1962. He was a key ally for the passage of Eisenhower's Interstate Highway System, and during his tenure supported the Polaris submarine project (built by Electric Boat Corporation in Groton, Connecticut), the establishment of the Peace Corps, and voted in favor of the Civil Rights Acts of 1957 and 1960 and the 24th Amendment to the U.S. Constitution.