Senate President Pro Tem Tom Dempsey represents part of St. Charles County in the Missouri Senate. He was elected to the Senate after winning a special election in 2007, re-elected in 2008 and again in 2012. Senator Dempsey was unanimously elected by his colleagues to serve as Senate Leader in 2013. He previously served seven years in the Missouri House of Representatives (2001-2007), and is the only Missouri lawmaker to have served as both House Majority Floor Leader and Senate Majority Floor Leader.

In addition to his legislative duties, Sen. Dempsey is vice president of First National Bank of St. Louis. His family has been in the restaurant business in St. Charles County for more than 50 years.

Born in St. Charles, Sen. Dempsey is a graduate of DeSmet Jesuit High School and received a B.A. degree in Political Science from Rockhurst University. He is a member of the Greater St. Charles County Chamber of Commerce, St. Charles Rotary Club and St. Cletus Catholic Church.

Senator Dempsey and his wife, Molly, reside in St. Charles; they are the parents of three children, Meaghan, Abby and Jack.