; and (2) have uniform hours each day for which such voting occurs. (c) Location of polling places near public transportation To the greatest extent practicable, a State shall ensure that each polling place which allows voting during an early voting period under subsection (a) is located within walking distance of a stop on a public transportation route. (d) Standards (1) In general The Commission shall issue standards for the administration of voting prior to the day scheduled for a Federal election. Such standards shall include the nondiscriminatory geographic placement of polling places at which such voting occurs. (2) Deviation The standards described in paragraph (1) shall permit States, upon providing adequate public notice, to deviate from any requirement in the case of unforeseen circumstances such as a natural disaster, terrorist attack, or a change in voter turnout. (e) Effective date This section shall apply with respect to elections held on or after January 1, 2018. 307. Promoting ability of voters to vote by mail (a) In General If an individual in a State is eligible to cast a vote in an election for Federal office, the State may not impose any additional conditions or requirements on the eligibility of the individual to cast the vote in such election by mail, except as required under subsection (b) and except to the extent that the State imposes a deadline for requesting the ballot and related voting materials from the appropriate State or local election official and for returning the ballot to the appropriate State or local election official. (b) Requiring signature verification A State may not accept and process an absentee ballot submitted by any individual with respect to an election for Federal office unless the State verifies the identification of the individual by comparing the individual’s signature on the absentee ballot with the individual’s signature on the official list of registered voters in the State, in accordance with such procedures as the State may adopt. (c) Effective date This