The 1990 United States Senate elections were held on Tuesday, November 6, 1990, with the 33 seats of Class 2 contested in regular elections. Special elections were also held to fill vacancies. The Democratic Party increased its majority with a net gain of one seat from the Republican Party. The election cycle took place in the middle of President George H. W. Bush's term, and as with most other midterm elections, the party not holding the presidency gained seats in Congress. This was the first time since 1980 that any party successfully defended all their own seats, and the first time Democrats did so since 1958.
The 1978 United States Senate elections were held on November 7, in the middle of Democratic President Jimmy Carter's term. The 33 seats of Class 2 were contested in regular elections. Special elections were also held to fill vacancies.
The 1966 United States Senate elections were elections on November 8, 1966, for the United States Senate which occurred midway through the second term of President Lyndon B. Johnson. The 33 seats of Class 2 were contested in regular elections. Special elections were also held to fill vacancies. With divisions in the Democratic base over the Vietnam War, and with the traditional mid-term advantage of the party not holding the presidency, the Republicans took three Democratic seats, thereby breaking Democrats' 2/3rds supermajority. Despite Republican gains, the balance remained overwhelmingly in favor of the Democrats, who retained a 64–36 majority. Democrats were further reduced to 63–37, following the death of Robert F. Kennedy in June 1968.
The 1936 United States Senate elections coincided with the reelection of President Franklin D. Roosevelt. The 32 seats of Class 2 were contested in regular elections, and special elections were held to fill vacancies. The Great Depression continued and voters backed progressive candidates favoring Roosevelt's New Deal in races across the country. The Democrats gained 5 net seats during the election, and in combination with Democratic and Farmer–Labor interim appointments and the defection of George W. Norris from the Republican Party to become independent, the Republicans were reduced to 16 seats. Democrats gained a further two seats due to mid-term vacancies. The Democrats' 77 seats and their 62-seat majority remain their largest in history.
The 1912–13 United States Senate elections were held on various dates in various states. They were the last U.S. Senate elections before the ratification of the Seventeenth Amendment in 1913, establishing direct elections for all Senate seats. Senators had been primarily chosen by state legislatures. Senators were elected over a wide range of time throughout 1912 and 1913, and a seat may have been filled months late or remained vacant due to legislative deadlock. Some states elected their senators directly even before passage of Seventeenth Amendment. Oregon pioneered direct election and experimented with different measures over several years until it succeeded in 1907. Soon after, Nebraska followed suit and laid the foundation for other states to adopt measures reflecting the people's will. By 1912, as many as 29 states elected senators either as nominees of their party's primary or in conjunction with a general election.
The 1924 Louisiana gubernatorial election was held in two rounds on January 15 and February 19, 1924. Like most Southern states between the Reconstruction Era and the Civil Rights Movement, Louisiana's Republican Party was virtually nonexistent in terms of electoral support. This meant that the two Democratic Party primaries held on these dates were the real contest over who would be governor. The 1924 election saw Henry L. Fuqua defeat Hewitt Bouanchaud to become Governor of Louisiana, and saw the beginning of the political rise of Huey P. Long Jr., who came in a surprisingly strong third.
John Milliken Parker Sr., was an American Democratic politician from Louisiana, who served as the state's 37th Governor from 1920 to 1924. He was a friend and admirer of U.S. President Theodore Roosevelt. He participated in the 1891 New Orleans lynchings.
The 1920 Louisiana gubernatorial election was held on April 20, 1920. Like most Southern states between the Reconstruction Era and the Civil Rights Movement, Louisiana's Republican Party had virtually no electoral support. This meant that the Democratic Party primary held on January 20 was the real contest over who would be governor. The election resulted in the election of John M. Parker as governor of Louisiana.
The 2015 Louisiana gubernatorial election was held on November 21, 2015, to elect the governor of Louisiana. Incumbent Republican governor Bobby Jindal was not eligible to run for re-election to a third term because of term limits established by the Louisiana Constitution.
The 2015 Louisiana Attorney General election took place on October 24, 2015 to elect the Attorney General of the U.S. state of Louisiana, with a runoff election, held on November 21, 2015. Incumbent Buddy Caldwell, a former Democrat who joined the Republican Party in February 2011, sought re-election to a third term in office, but was defeated by fellow Republican Jeff Landry.
The 1912 Louisiana gubernatorial election was held on April 16, 1912. Like most Southern states between Reconstruction and the civil rights era, Louisiana's Republican Party had almost no electoral support. This meant that the Democratic Party primary held on January 23 was the real contest over who would be governor. The election resulted in the election of Democrat Luther E. Hall as governor of Louisiana.
The 1920 United States Senate election in Louisiana was held on November 2, 1920. Incumbent senator Edward J. Gay did not run for re-election.
The 1972 United States Senate election in Louisiana was held on November 9, 1972.
Ruffin Golson Pleasant was the 36th Governor of Louisiana, from 1916 to 1920, who is remembered for having mobilized his state for World War I. Prior to his governorship, Pleasant was the Louisiana attorney general from 1912 to 1916, and the city attorney of Shreveport from 1902 to 1908.
The 1928 United States presidential election in Louisiana took place on November 6, 1928, as part of the wider United States presidential election. Voters chose ten representatives, or electors, to the Electoral College, who voted for president and vice president.
The 1924 United States presidential election in Louisiana took place on November 4, 1924, as part of the 1924 United States presidential election, which was held throughout all contemporary forty-eight states. Voters chose ten representatives, or electors to the Electoral College, who voted for president and vice president.
The 1916 Illinois gubernatorial election was held on November 7, 1916. Incumbent Democratic Governor Edward Fitzsimmons Dunne was defeated by Republican nominee Frank Orren Lowden.
The 1916 United States presidential election in Louisiana took place on November 7, 1916 as part of the 1916 United States presidential election. Voters chose ten representatives, or electors to the Electoral College, who voted for president and vice president.
The 2023 Louisiana gubernatorial election was held on October 14, 2023 to elect the governor of Louisiana. Incumbent Governor John Bel Edwards was term-limited and could not seek re-election to a third consecutive term in office. This race was one of two Democratic-held governorships up for election in 2023 in a state that voted for Donald Trump in 2020.
The 1916 Illinois lieutenant gubernatorial election was held on November 7, 1916. It saw the election of Republican former governor John G. Oglesby to a second nonconsecutive term.
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