Thomas Riley Marshall was an American politician who served as the 28th vice president of the United States from 1913 to 1921 under President Woodrow Wilson. A prominent lawyer in Indiana, he became an active and well known member of the Democratic Party by stumping across the state for other candidates and organizing party rallies that later helped him win election as the 27th governor of Indiana. In office, he attempted to implement changes from his progressive agenda to the Constitution of Indiana, but his efforts proved controversial and were blocked by the Indiana Supreme Court.

Thomas Taggart was an Irish-American politician who was the political boss of the Democratic Party in Indiana for the first quarter of the twentieth century and remained an influential political figure in local, state, and national politics until his death. Taggart was elected auditor of Marion County, Indiana (1886–1894), and mayor of Indianapolis. His mayoral administration supported public improvements, most notably the formation of the city's park and boulevard system. He also served as a member of the Democratic National Committee (1900–1916) and as its chairman (1904–1908). Taggart was appointed to the U.S. Senate in March 1916, but lost the seat in the November election.