Wikipedia has this to say about it:

"The "right to vote" is not explicitly stated in the U.S. Constitution except in the above referenced amendments, and only in reference to the fact that the franchise cannot be denied or abridged based solely on the aforementioned qualifications. In other words, the "right to vote" is perhaps better understood, in layman's terms, as only prohibiting certain forms of legal discrimination in establishing qualifications for suffrage. States may deny the "right to vote" for other reasons."

https://en.wikipedia.org/wiki/Voting_rights_in_the_United_St...