U.S. state legislatures - distribution of political party control 1990-2019

This graph shows the distribution of the political party control of state legislatures from 1990 to 2019. In 2019 there were 18 states were under democratic control, compared to 13 states in 2018.

Distribution of political party control of U.S. state legislatures from 1990 to 2019

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Source

Release date

December 2019

Region

United States

Survey time period

1990 to 2019

Supplementary notes

The data for previous years can be found here, published by the U.S. Census Bureau.
In 1983, two midterm recall elections resulted in a change in control of the Michigan State Senate. At the time of the 1984 election, therefore, Democrats controlled 33 legislatures.

in 1989, a party change during the year by a Democratic representative broke the tie in the Indiana House of Representatives, giving the Republicans control of both chambers.

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