The government of Indiana is established and regulated by the Constitution of Indiana. The state-level government consists of three branches: the judicial branch, the legislative branch, and the executive branch. The three branches share power and jointly govern the state of Indiana. County and local governments are also constitutional bodies with limited authority to levy taxes, pass legislation, and create and maintain local public infrastructure.

The Indiana Senate is the upper house of the Indiana General Assembly, the state legislature of the U.S. state of Indiana. The Senate is composed of 50 members representing an equal number of constituent districts. Senators serve four-year terms without term limits. According to the 2010 U.S. census, the average state senator represents 129,676 people.