Complex sentence: He was the state's 33rd Lieutenant Governor and held that office longer than anyone else until Peter Kinder was elected to a third-term in the post--surpassed that record, serving from 2005 until 2017.
Split into simpler sentences: He was the state's 33rd Lieutenant Governor and held that office longer than anyone else to date. However, later Missouri Lieutenant Governor Peter Kinder--elected to a third-term in the post--surpassed that record, serving from 2005 until 2017.