Postal voting in the United States

对其进行了五次修订以扩大其对投票权的保护。此法案的目的为保障由美国宪法第十四修正案与第十五修正案确定的投票权（英语：Voting rights in the United States），该法案保障了全美各种族（尤其是美国南部，不少非裔美國人被剝奪了投票權）的投票权。根据美国司法部，该法案被认为是有史以来最有效的保障公民权利的法案。

These Are the States That Allow You to Vote Early. www.time.com. Time Magazine. [17 February 2017]. （原始内容存档于2021-01-21）.  Absentee and Early Voting （页面存档备份，存于互联网档案馆）

Vote" to the United States. Farrar, Straus and Giroux. "One person, one vote", in David Andrew Schultz (2010). Encyclopedia of the United States Constitution

ISBN 978-0-435-33158-0. （原始内容存档于2017-03-25）.  Maine became the first state in the country Tuesday to pass ranked choice voting. 2016-11-10 [2016-11-10]. （原始内容存档于2016-11-10）

All legislative Powers herein granted shall be vested in a Congress of the United States, which shall consist of a Senate and House of Representatives