I will admit the word "requirements" was not the proper one at that moment. The Constitution does lay out the general guidelines of who gets to vote.
The 14th, 15th, 19th, and 26th amendments establishes universal suffrage for Americans over 18.
Huh?
The 14th amendment deals with this quite clearly.
The states fall under the feds here.
Obviously the 15th, 19th and 26th amendments make the references to males 21 years or older obsolete, but it says very clearly that US citizens have the right to vote, and it cannot be taken away short of conviction of a crime(felony).
This notion that people should be denied the right to vote by not holding an arbitrary level of wealth, or a close following of the issues, is unconstitutional