Last I heard (but my information may not be up to date) in 49 48 of the 50 states in the U.S., persons serving a sentence for a felony are not allowed to vote.
Suppose a person is convicted of a felonious failure to pay a tax. Under the 24th Amendment, their right to vote cannot be denied for that particular offense. (If it were tax evasion, i.e. concealing facts in order to avoid paying, that would be different matter, if I'm not mistaken.)
My question is whether that has ever happened, i.e. a person convicted of a felonious failure to pay a tax has been allowed to vote while serving a sentence because of the 24th Amendment?