Which amendment abolished poll taxes in federal elections?

The 24th Amendment abolished poll taxes in federal elections. Ratified in 1964, this amendment aimed to eliminate a financial barrier that was used to restrict voting rights, particularly among low-income individuals and various minority groups. Poll taxes required voters to pay a fee to vote, which effectively disenfranchised those who could not afford to pay. The 24th Amendment makes it clear that the right to vote in federal elections cannot be denied or abridged by the United States or any state due to failure to pay any poll tax or other tax.

This key legislative change reflects the broader civil rights movement's goal of ensuring equal access to the electoral process and addressing systemic inequalities in voting. The other amendments mentioned, while significant in their own rights, pertain to different aspects of voting rights or governance and do not address the issue of poll taxes.