U.S. Constitution, Article II — The Executive Branch, Section 1, Clause 2
Each State shall appoint, in such Manner as the Legislature thereof may direct, a Number of Electors, equal to the whole Number of Senators and Representatives to which the State may be entitled in the Congress: but no Senator or Representative, or Person holding an Office of Trust or Profit under the United States, shall be appointed an Elector.
Notes
Requires each state to appoint, in the manner its legislature directs, a number of electors equal to its total Senators and Representatives in Congress. Bars any Senator, Representative, or person holding an office of trust or profit under the United States from being appointed an elector.
Use as reference
Lexinter.net | U.S. Const. art. II, § 1, cl. 2 | https://laws.lexinter.net/constitution/us/article-2/section-1/clause-2