Which constitutional amendment abolished poll taxes in federal elections?

The Twenty-fourth Amendment abolished poll taxes in federal elections. Ratified in 1964, this amendment specifically prohibits the imposition of poll taxes as a requirement for voting in federal elections. The significance of this amendment lies in its role in promoting voting rights by removing a financial barrier that was often used to disenfranchise low-income individuals and minority voters. Prior to this amendment, some states employed poll taxes as a means to restrict access to the electoral process, thus contributing to systemic inequalities in voting.

The other amendments mentioned serve different purposes; for instance, the Fifteenth Amendment addresses voting rights by prohibiting the denial of the right to vote based on race or color. The Nineteenth Amendment grants women the right to vote, while the Twenty-sixth Amendment lowers the voting age to 18. Each of these amendments plays a crucial role in the evolution of voting rights in the United States but does not specifically deal with the issue of poll taxes in federal elections.