; (2) by striking and at the end of paragraph (1); (3) by redesignating paragraph (2) as paragraph (3); and (4) by inserting after paragraph (1) the following new paragraph: (2) any electronic poll book used with respect to the election; and . (b) Definition Section 301 of such Act ( 52 U.S.C. 21081 ) is amended— (1) by redesignating subsections (c) and (d) as subsections (d) and (e); and (2) by inserting after subsection (b) the following new subsection: (c) Electronic poll book defined In this Act, the term electronic poll book means the total combination of mechanical, electromechanical, or electronic equipment (including the software, firmware, and documentation required to program, control, and support the equipment) that is used— (1) to retain the list of registered voters at a polling location, or vote center, or other location at which voters cast votes in an election for Federal office; and (2) to identify registered voters who are eligible to vote in an election. . (c) Effective date Section 301(e) of such Act ( 52 U.S.C. 21081(e) ), as redesignated by subsection (b), is amended by striking the period at the end and inserting the following: , or, with respect to any requirements relating to electronic poll books, on and after January 1, 2020. . 4. Security clearance assistance for election officials (a) State officials In order to promote the timely sharing of information on threats to election infrastructure, the Secretary of Homeland Security may— (1) help expedite a security clearance at the top secret level for the chief State election official and other appropriate State personnel involved in the administration of elections, as designated by the chief State election official; (2) sponsor a security clearance at the top secret level for the chief State election official and other appropriate State personnel involved in the administration of elections, as designated by the chief State election official