The Iowa caucuses are quadrennial electoral events for the Democratic and Republican parties in the U.S. state of Iowa. Unlike primary elections, where registered voters cast ballots at polling places on election day, Iowa caucuses are meetings where voters gather to discuss and select candidates for their registered party. Political parties hold the caucuses, in contrast to most state-run primaries. Both presidential and midterm elections in Iowa use caucuses. The caucuses are also held to select delegates to county conventions and party committees, among other party activities.
The 2008 Louisiana Republican presidential caucuses were held on January 22 and the primary on February 9, 2008.
This article contains the results of the 2012 Republican presidential primaries and caucuses, which resulted in the nomination of Mitt Romney as the Republican nominee for President of the United States. The 2012 Republican primaries were the selection processes by which the Republican Party selected delegates to attend the 2012 Republican National Convention from August 27–30. The series of primaries, caucuses, and state conventions culminated in the national convention, where the delegates cast their votes to formally select a candidate. A simple majority (1,144) of the total delegate votes (2,286) was required to become the party's nominee.
Presidential primaries and caucuses of the Republican Party took place within all 50 U.S. states, the District of Columbia, and five U.S. territories between February 1 and June 7, 2016. These elections selected the 2,472 delegates that were sent to the Republican National Convention. Businessman and reality television personality Donald Trump won the Republican nomination for president of the United States.
This article contains the results of the 2016 Republican presidential primaries and caucuses, the processes by which the Republican Party selected delegates to attend the 2016 Republican National Convention from July 18–21. The series of primaries, caucuses, and state conventions culminated in the national convention, where the delegates cast their votes to formally select a candidate. A simple majority (1,237) of the total delegate votes (2,472) was required to become the party's nominee and was achieved by the nominee, businessman Donald Trump of New York.
The 2016 United States presidential election in Missouri was held on Tuesday, November 8, 2016, as part of the 2016 United States presidential election in which all 50 states plus the District of Columbia participated. Missouri voters chose electors to represent them in the Electoral College via a popular vote, pitting the Republican Party's nominee, businessman Donald Trump, and running mate Indiana Governor Mike Pence against Democratic Party nominee, former Secretary of State Hillary Clinton, and her running mate Virginia Senator Tim Kaine. Missouri has 10 electoral votes in the Electoral College.
The 2016 United States presidential election in Arizona was held on Tuesday, November 8, 2016, as part of the 2016 United States presidential election in which all 50 states plus the District of Columbia participated. Arizona voters chose electors to represent them in the Electoral College via a popular vote, pitting the Republican nominee, businessman Donald Trump, and running mate Indiana Governor Mike Pence against Democratic nominee, former Secretary of State Hillary Clinton, and her running mate Virginia Senator Tim Kaine. Arizona has 11 electoral votes in the Electoral College.
The 2020 Washington Democratic presidential primary took place on March 10, 2020, as one of several states voting the week after Super Tuesday in the Democratic Party primaries for the 2020 presidential election. The state-run semi-open primary, which was used instead of party-run caucuses for the first time by Washington's Democrats, awarded 109 delegates to the 2020 Democratic National Convention, of which 89 were pledged delegates allocated according to the results of the primary.
Below is a detailed tally of the results of the 2020 Republican Party presidential primary elections in the United States. In most U.S. states outside New Hampshire, votes for write-in candidates remain untallied.
This article contains the results of the 2020 Democratic Party presidential primaries and caucuses, the processes by which the Democratic Party selected delegates to attend the 2020 Democratic National Convention from August 17–20, 2020. The series of primaries, caucuses, and state conventions culminated in the national convention, where the delegates cast their votes to formally select a candidate. A simple majority (1,990) of the total delegate votes (3,979) was required to become the nominee.
Presidential primaries and caucuses of the Republican Party took place within all 50 U.S. states, the District of Columbia, and five U.S. territories between January 15, 2024, and June 4, 2024, ahead of the 2024 United States presidential election. These elections selected most of the 2,429 delegates to be sent to the Republican National Convention. Former president Donald Trump was nominated for president of the United States for a third consecutive election cycle.
From January 23 to June 8, 2024, presidential primaries and caucuses were organized by the Democratic Party to select the delegates to the 2024 Democratic National Convention, to determine the party's nominee for president in the 2024 United States presidential election. The elections took place in all U.S. states, the District of Columbia, five U.S. territories, and Democrats Abroad.
The 2024 Nevada Republican presidential primary and caucus were held on February 6 and 8, 2024, respectively, as part of the Republican Party primaries for the 2024 presidential election. 26 delegates to the 2024 Republican National Convention were allocated on a proportional basis in the caucus. They were held following the Iowa caucuses and the New Hampshire primary.
The 2024 District of Columbia Republican presidential primary was held from March 1 to 3, 2024, as part of the Republican Party primaries for the 2024 presidential election. 19 delegates to the 2024 Republican National Convention were allocated on a winner-take-all basis. Nikki Haley won the primary with a nearly 30-point lead against Donald Trump, with all delegates going to her. It was Haley's first win nationwide in the primaries and marked the first time a woman won a Republican presidential primary in U.S. history.
The following is a list of candidates associated with the 2024 Republican Party presidential primaries for the 2024 United States presidential election. As of December 2023, more than 400 candidates have filed with the Federal Election Commission (FEC) to run for the Republican nomination in 2024.
The 2024 Kentucky Democratic presidential primary was held on May 21, 2024, as part of the Democratic Party primaries for the 2024 presidential election. 59 delegates to the Democratic National Convention will be allocated to presidential candidates. Incumbent President Joe Biden won the primary. Uncommitted received 17.9% of the vote and 8 delegates.
In the 2024 United States presidential election, different laws and procedures govern whether or not a candidate or political party is entitled to appear on voters' ballots. Under Article 2, Section 1 of the United States Constitution, laws about election procedure are established and enforced by the states. Additionally, there are often different requirements for primary and general elections, and requirements for primary elections may additionally differ by party.
This article contains the results of the 2024 Democratic Party presidential primaries and caucuses, the processes by which the Democratic Party selects delegates to attend the 2024 Democratic National Convention. The series of primaries, caucuses, and state conventions culminate in the national convention, where the delegates cast their votes to formally select a candidate. A simple majority of the total delegate votes is required to become the nominee.
"Uncommitted" is a voting option in some United States presidential primaries. This option is listed along with the names of individuals running for the position and is often described as "none of the above". Depending on state and party thresholds, voting uncommitted may allow states to send uncommitted delegates to a party's nominating convention.
2024 U.S. presidential election 
