[1] In 1955, Fox became the Democratic nominee for State Senator, challenging freshman Republican incumbent Mark Anton.
Anton faced a split among Essex Republican factions after just narrowly defeating Assembly Majority Leader William O. Barnes in the GOP Primary.
[3] Fox won re-election to a second term in 1959, defeating Republican Alfred Clapp, who served in the State Senate from 1948 to 1953, when he resigned to become a Superior Court Judge.
Clapp left the bench to help the GOP regain the Senate seat, but Fox won by 14,582 votes, a 51%-45% win.
[4] He did not seek re-election to a third term in 1963 after losing the support of the Essex County Democratic organization, but instead accepted an appointment by Governor Richard J. Hughes as a Commissioner of the Waterfront Commission of New York Harbor.