Presidential primaries and caucuses are being 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 will take place in all 50 U.S. states, the District of Columbia, five U.S. territories, and Democrats Abroad, and will be held between February and June that year. Incumbent president Joe Biden has consistently stated that he plans to run for re-election and keep vice president Kamala Harris as his running mate. However, he has yet to officially declare his candidacy. During late 2021, as Biden was suffering from low approval ratings, there was speculation that he would not seek re-election, and some prominent Democrats have publicly urged Biden not to run. In addition to Biden's unpopularity, many are concerned about his age; he was the oldest person to assume the office at age 78 and would be 82 at the end of his first term. If re-elected, he would be 86 at the end of his second term. There has also been speculation that Biden may face a primary challenge from a member of the Democratic Party's progressive faction. However, Biden's approval rating slowly recovered throughout 2022, climbing from the low 30s to the high 40s. Additionally, after Democrats outperformed expectations in the 2022 midterm elections, many believed the chances that Biden would run for and win his party's nomination had increased. If Biden is not the nominee in 2024, it will be the first election since 1968 in which an eligible incumbent president was not the eventual nominee of their party after Lyndon B. Johnson, and if he chooses not to seek re-election, it will be the first election since 1928 in which an eligible incumbent president did not seek re-election after Calvin Coolidge. If Biden is the nominee in 2024, then re-elected to a second term and served two full terms as president, which will be ended on January 20, 2029, he will be the first person to complete two full terms as both vice president and president. (Richard Nixon was re-elected to a second term as both vice president and president but resigned in 1974 before he would completed his second term as president).[citation needed] From Wikipedia