The main purpose of this legislation is to establish a clear deadline for when absentee and mail-in ballots must be received in order to be counted in federal elections. This change aims to ensure that all votes are submitted on time, enhancing the integrity and efficiency of the electoral process. Key provisions of the legislation include the requirement that all absentee and mail-in ballots must be received by election officials by the time polls close on election day. This applies specifically to elections for federal office.