Who is the youngest President ever elected?

The youngest President ever elected is John F. Kennedy, who took office at the age of 43 after winning the 1960 election. His election symbolizes not only a generational shift in American politics but also a new era characterized by youthful energy and optimism, famously encapsulated in his inaugural address where he encouraged citizens to "ask not what your country can do for you—ask what you can do for your country." This marked a significant moment in U.S. history, as Kennedy's presidency focused on issues such as civil rights, space exploration, and the Cold War, all of which were pivotal during the early 1960s.

The other figures listed, while significant in their own right, either succeeded to the presidency without being elected to a full term or were elected at an older age. Theodore Roosevelt was 42 when he assumed the presidency but was not elected to that position; he became president after the assassination of William McKinley. Calvin Coolidge was 51 when he was elected, and Ulysses S. Grant was 46 at the time of his election. Thus, Kennedy's election at a younger age remains a notable historical fact.