; or (4) any other evidence so designated for purposes of this section by the Election Assistance Commission, except that the election official may use such evidence if it is corroborated by independent evidence of the individual’s ineligibility to register or vote. (c) Requirements for Challenges by Persons Other Than Election Officials No person, other than a State or local election official, shall submit a formal challenge to an individual’s eligibility to register to vote in an election for Federal office or to vote in an election for Federal office unless that challenge is supported by personal knowledge regarding the grounds for ineligibility which is— (1) documented in writing