39.10  United States senators.
  Senators in the Congress of the United States shall be elected in the same manner in which state officers are elected.
[R60, §674; C73, §26; C97, §30; S13, §1087-c; C24, 27, 31, 35, 39, §513; C46, 50, 54, 58, 62, 66, 71, 73, 75, 77, 79, 81, §39.10]
Term of office, United States Constitution, Amendment 17 
Vacancy in United States senate, see §69.13