Over the last 100 years there have been 189 appointments made to the U.S. Senate to fill vacancies created for a variety of reasons such as retirement, death, or resignations to become president or vice-president. Kentucky leads the way with the most such appointments since the introduction of direct elections in 1913 with eight, followed by New Jersey, North Carolina, and South Carolina with seven, and Idaho and Minnesota with six. The state average is 3.8 appointments during this span, with the most recent being Nevada Republican Dean Heller to fill John Ensign's seat earlier this year. Four states, however, have not had to appoint a single U.S. Senator over these last 98 years: Arizona, Maryland, Utah, and Wisconsin. Hawaii, Maine, and Oklahoma have appointed just one each.
Mark Dayton is one of just three Minnesotans ever elected to three different statewide offices. Dayton, of course, had previously served as State Auditor (1991-1995) and U.S. Senator (2001-2007) before winning the governorship in 2010. At that time, he joined Republicans Edward Thye and J.A.A. Burnquist on this very short list. Burnquist was elected governor in 1914 but then became governor after the death of Democrat Winfield Hammond in 1915. He then won the gubernatorial elections of 1916 and 1918 and eight terms as attorney general two decades later (1939-1955). Thye was similarly first elected lieutenant governor of the Gopher State and became governor after the resignation of fellow GOPer Harold Stasson in 1943. Thye won one additional full term as governor in 1944 and then two terms to the U.S. Senate (1947-1959). Twenty Minnesotans have been elected to two different statewide offices.
With retirement announcements this year by veteran U.S. Representatives such as 30-term Democrat John Dingell of Michigan, 20-term Democrat George Miller of California, and 18-term Republican Tom Petri of Wisconsin, it is no surprise that retirees from the 113th Congress are one of the most experienced cohorts in recent decades. Overall, these 24 exiting members of the House have served an average of 11.0 terms - the second longest tenure among retirees across the last 18 cycles since 1980. Only the U.S. Representatives retiring in 2006 had more experience, averaging 11.9 terms. (In that cycle, 10 of the 11 retiring members served at least 10 terms, with GOPer Bill Jenkins of Tennessee the lone exception at just five). Even without the aforementioned Dingell, the average length of service in the chamber of the remaining 23 retirees in 2014 is 10.2 terms - which would still be the third highest since 1980 behind the 2006 and 2012 (10.5 terms) cycles.
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