Gubernatorial and legislative party control of state government

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Gubernatorial and legislative party control of state government refers to the role of political parties in the power dynamic between state legislatures and executives. Below, we examine the partisan affiliation of the 1,972 state senators, 5,411 state representatives, and 50 state governors across the United States.


Partisan breakdown of state governments

Below, Ballotpedia presents our information on the partisan breakdown of state senators, state representatives, and governors as well as the state legislature and state executive branch as a whole. We also examine state government trifectas, which occur when the state house, the state senate, and the office of the governor are each controlled by one political party. Trifectas are important to highlight since unified partisan affiliation between the branches of state government can impact a state's legislative process.



The following maps display current state government trifectas as well as historical trifectas leading up to the 2010, 2012, 2014, 2016, and 2018 elections. Use the buttons on the left to select a map.



Current state government trifectas
State government trifectas, post-2018 elections
State government trifectas, pre-2018 elections
State government trifectas, post-2016 elections
State government trifectas, pre-2016 elections
State government trifectas, pre-2014
State government trifectas, pre-2012
State government trifectas, pre-2010