1983–2003: 10 seats 2003–present: 9 seats U.S. Senate Each state elects two senators by statewide popular vote every six years. The terms of the two senators are staggered so that they are not elected in the same year. Indiana's senators are elected in the years from classes 1 and 3. Senators were originally chosen by the Indiana General Assembly until the Seventeenth Amendment came into force in 1913. Of the forty-six men who have been senators from Indiana, there have been three Democratic-Republicans, three Adams Republicans (including James Noble, who was both a Democratic-Republican and Adams Republican), two Whigs, one Unionist, twenty-one Democrats, and seventeen Republicans. See also List of United States congressional districts Indiana's congressional districts Political party strength in Indiana Notes References Indiana Politics of Indiana Congressional delegations