Which amendment to the Constitution allows citizens eighteen and older to vote?

The Twenty-sixth Amendment to the Constitution is significant because it establishes the voting age as eighteen years, ensuring that all citizens who are at least eighteen can participate in elections. This amendment was ratified in 1971, primarily in response to arguments during the Vietnam War era, when many young people were being drafted to fight but could not vote. By lowering the voting age, the amendment aimed to grant these young citizens a voice in the democratic process and acknowledge their rights as full participants in society.

The other amendments mentioned address different aspects of voting rights. The First Amendment primarily protects freedoms concerning religion, expression, assembly, and the right to petition the government. The Nineteenth Amendment granted women the right to vote, while the Twenty-fourth Amendment eliminated poll taxes in federal elections. Each of these amendments plays a crucial role in expanding and protecting voting rights, but the Twenty-sixth specifically addresses the voting age.