Elimination of Poll Taxes
"The right of citizens of the United States to vote in any primary or other election for President or Vice-President, for electors for President or Vice-President, or for Senator or Representative in Congress, shall not be denied or abridged by the United States or any state by reason of failure to pay any poll tax or other tax."
In order to circumvent the fifteenth amendment, many southern states had begun instituting a poll tax, which most black citizens could not afford. In that way, the states could disenfranchise the black population without violating the constitution. This amendment is a direct reaction to such practices.