At the regular election held in any State next preceding the expiration of the term for which any Senator was elected to represent such State in Congress , at which election a Representative to Congress is regularly by law to be chosen, a United States Senator from said State shall be elected by the people thereof for the term commencing on the 3d day of January next thereafter. (June 4, 1914, ch. 103, § 1, 38 Stat. 384 ; June 5, 1934, ch. 390, § 3, 48 Stat. 879 .) Editorial Notes Amendments 1934—Act June 5, 1934 , substituted “3d day of January” for “fourth day of March”. Constitutional Provisions The first section of Amendment XX to the Constitution provides in part: “* * * the terms of Senators and Representatives [shall end] at noon on the 3d day of January, of the years in which such terms would have ended if this article had not been ratified; and the terms of their successors shall then begin.” Time for election of Senators, see Const. Art. I , § 4, cl. 1. Vacancies in the Senate , see Const. Amend. XVII .