 Tom Anglin of Holdenville, Oklahoma, was the first to hold the office a second time, serving from 1923 to 1925 and again from 1943 to 1945.Clem McSpadden was the first president pro tempore to serve two consecutive terms, from 1965 to 1969.From 1965 to 2006, ten state senators have been selected to serve as president pro tempore over the 41-year period that would have allowed for the election of 22 presidents pro tempore.