; and (B) preventing a waiting time of over 30 minutes at any polling place. (4) Special rule regarding electronic poll books Notwithstanding paragraphs (1), (2), and (3), in the case of any voting site that uses an electronic poll book, the standards described in subsection (a) shall require at least 1 paper poll book (containing all of the information necessary to confirm that an individual is eligible to cast a vote at the site) for each such electronic poll book used at such voting site. (c) Deviation The standards described in subsection (a) shall permit States, upon giving reasonable public notice, to deviate from any allocation requirements in the case of unforeseen circumstances such as a natural disaster or terrorist attack. . (2) Conforming amendment Section 202 of such Act ( 52 U.S.C. 20922 ), as amended by section 3(c), is amended— (A) by redesignating paragraphs (4), (5), and (6) as paragraphs (5), (6), and (7), respectively; and (B) by inserting after paragraph (4) the following new paragraph: (5) carrying out the duties described in subtitle E