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Colorado became the 38th state in the Union on August 1, 1876. Colorado’s first two senators, Jerome B. Chaffee and Henry M. Teller, took office on November 15, 1876. Colorado’s longest-serving senator is Henry Teller, who served non-consecutive terms totaling 29 years, 5 months, and 3 days. Among those who rose to leadership positions in the Senate are Eugene Millikin, who served as Republican Conference chairman; Gordon Allott and William Armstrong, both of whom served as chairmen of the Republican Policy Commitee; and Cory Gardner, who served as chairman of the Republican Senatorial Committee.