22 . Gonzalez also argues that the district court erred in evaluating one of the Senate Factors and in concluding that the disparate impact on Latinos was statistically insignificant. Because Gonzalez’s failure to show causation is dispositive, however, we need not reach these issues. 23 . Voters who use an early ballot to vote do not even have to show identification. Ariz. Rev.Stat. § 16-550(A)(for early ballots, elector identity is verified by signature comparison alone). 24 . ITCA’s briefing collapses the Twenty-fourth Amendment and Fourteenth Amendment poll tax claims into a single argument. But these are different claims that arise under different constitutional amendments. The Twenty-fourth Amendment extends only to federal elections, see Harman, 380 U.S. at 540, 85 S.Ct. 1177 (<HOLDING>), while the Fourteenth Amendment also
holding that the twentyfourth amendment abolished the poll tax as a requirement for voting in federal elections holding that a state may not condition voting in state elections on payment of a tax holding that taxpayers failure to follow state requirement that he report change in federal income tax did not except state tax liability from discharge holding texas poll tax unconstitutional holding that ujnder the plain meaning of the voting rights act the state of south dakota is an entity that must secure preclearance from the attorney general or bring a declaratory judgment action for review of a law passed by the state legislature that impacts voting in covered counties