change was the Republicans' inability to handle the Great Depression. During the phase-out of the party bosses, power moved from Kansas City to St. Louis, which had been a Democratic city since 1933. In the 2010 elections, the Missouri Democratic Party won three of the nine House of Representatives districts. That is a loss of one seat compared to the 2008 House of Representative elections. On a national level Missouri is known as a swing state. The voters of Missouri have voted against the eventual winner four times in the presidential elections, favoring Adlai Stevenson over Dwight Eisenhower in 1956, John McCain over Barack Obama in 2008, Mitt Romney over Barack Obama in 2012 and Donald Trump over Joe Biden in 2020. Harry S. Truman is probably the most influential person in the history of the Missouri Democratic Party. Truman played an important role in Missouri politics after the depression in 1929. He was one of the main beneficiaries of the powerful Tom Pendergast organization. The backing of the organization helped Truman secure Missouri's senator seat in the 1932 election. Truman later on, in 1944, got elected vice president to Franklin D. Roosevelt. After Roosevelt's death Missouri got its first President. Truman remained in the seat even after the 1948 election, given a large support from his home state. Especially the African-American part of the population, appreciative of Roosevelt's New Deal and Truman's Fair Deal program, stayed loyal to the Democratic Party. Current Democratic officeholders The Missouri Democratic Party holds none of the six statewide offices, none of the state's U.S. Senate seats and two of the state's eight U.S. House seats. Legislative Leadership Senate Minority Leader: John Rizzo House Minority Leader: Crystal Quade Assistant House Minority Floor Leader: Tommie Pierson Jr. House Minority Whip: Keri Ingle House Minority Caucus Chair: Ingrid Burnett House Minority Caucus Secretary: Barbara Washington State None Nicole Galloway was the last elected statewide Democrat, elected as State Auditor of Missouri. Federal U.S. Senate None Both of Missouri's U.S. Senate seats have been held by Republicans since 2019. Claire McCaskill was the last Democrat to represent Missouri in the U.S. Senate. U.S. House of Representatives Cori Bush, 1st District Emanuel Cleaver, 5th District See also Political party strength in Missouri Notes External links Missouri Democratic Party Democratic Party Missouri