Which amendment granted the District of Columbia the right to vote in federal elections?

The 23rd Amendment is significant because it specifically grants residents of the District of Columbia the right to vote in presidential elections. Ratified in 1961, this amendment allows D.C. to appoint electors in the Electoral College, equivalent to the number the least populous state would have, which ensures that those living in the capital have a voice in federal elections.

This amendment was essential because prior to its ratification, residents of D.C. were effectively disenfranchised in national elections, despite being residents of the capital of the United States. The amendment aimed to remedy this lack of representation and uphold the democratic principle that all citizens should have the right to vote for their elected leaders.

The other options address different rights or circumstances: the 21st Amendment repealed Prohibition, the 26th Amendment lowered the voting age to 18, and the 19th Amendment granted women the right to vote, none of which pertain to voting rights specifically for the District of Columbia in federal elections.