John Edward Sununu (born September 10, 1964) is a former Republican (GOP) United States Senator from New Hampshire. Sununu was the youngest member of the Senate for his entire six-year term. He is the son of former   New Hampshire Governor and former White House Chief of Staff  John H. Sununu. On November 4, 2008, Sununu lost his re-election bid to former governor Jeanne Shaheen.