Hansen won the governorship in the
1962 mid-term elections by 10,000 votes. He unseated the
Democrat Jack R. Gage, who had served fewer than two years. First, Hansen won the
GOP primary over two opponents with 57 percent of the ballots. Gage defeated William Jack to secure the Democratic nomination, 55.5-44.5 percent. In the
general election, Hansen polled 64,970 votes (54.5 percent) to Gage's 54,298 (45.5 percent). Several
newspapers in the
American West referred to him as Wyoming's "cowboy governor". Hansen's
obituary contends that he "brought both the down-to-earth pragmatism of a lifelong cattle rancher and the affability of a small-town politician to Cheyenne and then to Washington, and he was on friendly and familiar terms throughout his career, not only with those on both sides of the political aisle, but also with elevator attendants, cafeteria workers, and staff members throughout the Capitol who called him friend." As his
gubernatorial term wound down, Hansen decided to run for the U.S. Senate seat which was being vacated by the retiring Republican
Milward L. Simpson. He won that election with just under 52 percent of the vote. In a fairly Republican year nationally, he defeated popular Representative at-large
Teno Roncalio, a Democrat of
Italian extraction. Hansen received 63,548 votes (51.8 percent) to Roncalio's 59,141 (48.2 percent). ==U.S. Senate years, 1967–1978==