He returned to parliament in a in the electorate, but in the 1963 general election was elected MP for Pakuranga. When United States Vice President Spiro Agnew visited Wellington in mid-January 1970, Tizard along with several other Labour Members of Parliament including Arthur Faulkner, Jonathan Hunt, and Martyn Finlay boycotted the state dinner to protest American policy in Vietnam. However, other Labour MPs including Opposition Leader Norman Kirk attended the function which dealt with the Nixon Doctrine. In 1972 he became MP for Otahuhu again. In 1984 he became MP for Panmure, until he retired in 1990.