The 2011 United States state legislative elections were held on November 8, 2011. Eight legislative chambers in four states held regularly scheduled elections. These off-year elections coincided with other state and local elections, including gubernatorial elections in four states.
These were the first elections to be affected by redistricting after the 2010 census. Additionally, the first wave of recall elections occurred in the Wisconsin Senate; while Republicans lost seats, they maintained a narrow majority. A second wave would occur in 2012.
Republicans flipped control of the Virginia Senate, thereby establishing a trifecta. In Mississippi, Republicans won the state House for the first time since 1876. After having gained control of the Mississippi Senate in February 2011 in the year due to party switching, Republicans retained control of the chamber in the November election. Republicans thus obtained a trifecta in the state for the first time since 1876 as a result.
In Louisiana, Republicans gained control of the State House in December 2010 when a state representative switched parties, and control of the State Senate by winning a February 2011 special election, thus giving Republicans control of both chambers and a trifecta for the first time in the state since 1873.
Summary table.
Regularly scheduled elections were held in 8 of the 99 state legislative chambers in the United States. Nationwide, regularly scheduled elections were held for 578 of the 7,383 legislative seats. This table only covers regularly scheduled elections; additional special elections took place concurrently with these regularly scheduled elections.
State summaries.
Louisiana.
All seats of the Louisiana State Senate and the Louisiana House of Representatives were up for election to four-year terms in single-member districts. Republicans flipped both chambers through party switching and special elections in the past year, and then retained majority control in both chambers in the 2011 elections.
Mississippi.
All seats of the Mississippi State Senate and the Mississippi House of Representatives were up for election to four-year terms in single-member districts. Republicans won a majority in the lower house. They had previously won a majority in the upper house through party switching and special elections earlier in the year, and then retained a majority in the general election. 
New Jersey.
All seats of the New Jersey Senate and the New Jersey General Assembly were up for election. In 2011, senators were elected to two-year terms in single-member districts, while Assembly members were elected to two-year terms in two-member districts. Democrats retained majority control in both chambers.
Virginia.
All seats of the Senate of Virginia and the Virginia House of Delegates were up for election in single-member districts. Senators were elected to four-year terms, while delegates serve terms of two years. Republicans maintained control of the lower chamber and won control of the upper chamber because the Republican lieutenant governor broke the ties in the now-evenly split body.
References.
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