State Legislature by Party Mapped
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Each U.S. state has a legislature as part of its form of civilian government. In 27 states, the legislature is called the State Legislature, while in 19 U.S. states, the legislature is called the General Assembly. In New Hampshire and Massachusetts, the State legislature is named the General Court, while North Dakota and Oregon designate the Legislative Assembly.
Legislature typically serves state duties for a state in the same way that the U.S. Congress acts national responsibilities at the national level.
All state legislatures comprise two legislative bodies – a lower house and an upper house (Senate). District of Columbia and Nebraska Legislature have unicameral bodies.
The partisan composition of state legislatures refers to which political party takes most seats in the State House and State Senate. Collectively, there are 5,411 state representatives and 1,972 state senators.
The map below shows the Partisan Control of State Legislatures.
Partisan Control of State Legislatures

Nawadays (December 3, 2021), Republicans held 54.22 percent of all state legislative seats nationwide, while Democrats controlled 44.70 percent. Republicans kept a majority in 61 chambers, and Democrats controlled the prevalence in 37 chambers.
Related posts:
– The U.S. Presidential Voting History Mapped