He was first elected in the general election in 1951 .
He was first was subsequently re-elected in the general elections in 1955 , 1959 , 1963 , 1967 and 1971 , winning by large margins .
He was first elected in the general election in 1951 and was subsequently re-elected in the general elections in 1955 , 1959 , 1963 , 1967 and 1971 , winning by large margins .