A State may not refuse to accept or process, with respect to any election for Federal office, any otherwise valid voter registration application or absentee ballot application (including the postcard form prescribed under section 20301 of this title) submitted by an absent uniformed services voter during a year on the grounds that the voter submitted the application before the first date on which the State otherwise accepts or processes such applications for that year submitted by absentee voters who are not members of the uniformed services.