Political party strength in U.S. states is the level of representation of the various political parties in the United States in each statewide elective office providing legislators to the state and to the U.S. Congress and electing the executives at the state and national level.
The 2010 United States elections were held on Tuesday, November 2, 2010, in the middle of Democratic President Barack Obama's first term. Republicans ended unified Democratic control of Congress and the presidency by winning a majority in the House of Representatives and gained seats in the Senate despite Democrats holding Senate control.
The 2012 United States elections took place on November 6, 2012. Democratic President Barack Obama won reelection to a second term and the Democrats gained seats in both chambers of Congress, retaining control of the Senate even though the Republican Party retained control of the House of Representatives. As of 2024, this is the most recent election cycle in which neither the presidency nor a chamber of Congress changed partisan control, and the last time that the party that won the presidency simultaneously gained seats in both the House of Representatives and the Senate.
The 2014 United States elections were held on Tuesday, November 4, 2014, in the middle of Democratic President Barack Obama's second term. A typical six-year itch midterm election suffered by most second-term presidents, this election saw the Republican Party retaining control of the House of Representatives and winning control of the Senate, while furthering their gains in the governorships and state legislatures. Because of these Republican gains, the election was commonly cited as a "red wave" election.
The 2016 United States elections were held on Tuesday, November 8, 2016. Republican nominee Donald Trump defeated Democratic former Secretary of State Hillary Clinton in the presidential election, while Republicans retained control of Congress. This marked the first time Republicans won or held unified control of the presidency and Congress since 2004, and would not do so again until 2024.
The 2018 United States elections were held on Tuesday, November 6, 2018. These midterm elections occurred during Incumbent Republican President Donald Trump's first term. Although the Republican Party increased its majority in the Senate, unified Republican control of Congress and the White House was brought to an end when the Democratic Party won control of the House of Representatives in what was widely characterized as a "blue wave" election as Democrats also gained governorships, other statewide offices, and state legislative chambers.
Gerrymandering is the practice of setting boundaries of electoral districts to favor specific political interests within legislative bodies, often resulting in districts with convoluted, winding boundaries rather than compact areas. The term "gerrymandering" was coined after a review of Massachusetts's redistricting maps of 1812 set by Governor Elbridge Gerry noted that one of the districts looked like a mythical salamander.
The 2020 United States elections were held on Tuesday, November 3, 2020. The Democratic Party's nominee, former vice president Joe Biden, defeated incumbent Republican president Donald Trump in the presidential election. Despite losing seats in the House of Representatives, Democrats retained control of the House and very narrowly gained control of the Senate. As a result, the Democrats obtained a government trifecta, the first time since the elections in 2008 that the party gained unified control of Congress and the presidency. With Trump losing his bid for re-election, he became the first president to have seen his party lose the presidency and control of both the House and the Senate since Herbert Hoover in 1932. This was the first time since 1980 that either chamber of Congress flipped partisan control in a presidential year, and the first time Democrats did so since 1948.
The 2020 United States redistricting cycle is in progress following the completion of the 2020 United States census. In all fifty states, various bodies are re-drawing state legislative districts. States that are apportioned more than one seat in the United States House of Representatives are also drawing new districts for that legislative body.
The 2022 United States elections were held on November 8, 2022, with the exception of absentee balloting. During this U.S. midterm election, which occurred during the term of incumbent president Joe Biden of the Democratic Party, all 435 seats in the U.S. House of Representatives and 35 of the 100 seats in the U.S. Senate were contested to determine the 118th United States Congress. Thirty-nine state and territorial U.S. gubernatorial elections, as well as numerous state and local elections, were also contested. This was the first election affected by the 2022 redistricting that followed the 2020 census. The Republican Party ended unified Democratic control of Congress and the presidency by winning a majority in the House of Representatives while Democrats expanded their Senate majority.
The 2020 United States presidential election in Iowa was held on Tuesday, November 3, 2020, as part of the 2020 United States presidential election in which all 50 states plus the District of Columbia participated. Iowa voters chose electors to represent them in the Electoral College via a popular vote, pitting the Republican Party's nominee, incumbent President Donald Trump of Florida, and running mate Vice President Mike Pence of Indiana against Democratic Party nominee, former Vice President Joe Biden of Delaware, and his running mate California Senator Kamala Harris. Iowa has six electoral votes in the Electoral College.
The 2020 United States presidential election in Nevada was held on Tuesday, November 3, 2020, as part of the 2020 United States presidential election in which all 50 states plus the District of Columbia participated. Nevada voters chose electors to represent them in the Electoral College via a popular vote, pitting the Republican Party's nominee, incumbent President Donald Trump, and running mate Vice President Mike Pence against Democratic Party nominee, former Vice President Joe Biden, and his running mate California Senator Kamala Harris. Nevada has six votes in the Electoral College.
The 2020 United States House of Representatives elections in Iowa was held on November 3, 2020, to elect the four U.S. representatives from the state of Iowa, one from each of the state's four congressional districts. The elections coincided with the 2020 U.S. presidential election, as well as other elections to the House of Representatives, elections to the United States Senate and various state and local elections.
The 2020 elections for the Pennsylvania House of Representatives was held on November 3, 2020, with all districts being decided. The term of office for those that were elected in 2020 began when the House of Representatives convened in January 2021. Pennsylvania State Representatives were elected for two-year terms, with all 203 seats up for election every two years. The election was coincided with the 2020 United States presidential election, United States House of Representatives elections, and one-half of the State Senate.
The 2020 Minnesota Senate election was held in the U.S. state of Minnesota on November 3, 2020, to elect members to the Senate of the 92nd Minnesota Legislature. A primary election was held in several districts on August 11, 2020. The election coincided with the election of the other house of the Legislature, the House of Representatives, and other elections.
An election was held on November 3, 2020, to elect all 110 members of Michigan's House of Representatives.
The 2020 Georgia House of Representatives elections took place on November 3, 2020 as part of the biennial United States elections. Georgia voters elected state representatives in all 180 of the state house's districts to the 156th Georgia General Assembly. State representatives serve two-year terms in the Georgia House of Representatives.
The 2020 Texas House of Representatives elections took place as part of the biennial United States elections. Texas voters elected state representatives in all 150 of the state house's districts. Primary elections were held in March 2020. The winners of this election served in the 87th Texas Legislature. Two seats changed hands, both in Harris County, one Democratic flip and one Republican flip, for no net change.
The 2024 United States presidential election in Iowa was held on Tuesday, November 5, 2024, as part of the 2024 United States presidential election in which all 50 states plus the District of Columbia participated. Iowa voters chose electors to represent them in the Electoral College via a popular vote. The state of Iowa has six electoral votes in the Electoral College, following reapportionment due to the 2020 United States census in which the state neither gained nor lost a seat.
An election was held on November 8, 2022, to elect all 110 members to Michigan's House of Representatives. The election coincided with elections for other offices, including governor, State Senate and U.S. House of Representatives. Democrats won a majority of 56 out of 110 seats, winning control of the chamber for the first time since 2008.
