Here, from the super-Liberal Brennan Center:
"There are two relevant clauses. One is the Elections Clause, which reads, “The Times, Places and Manner of holding Elections for Senators and Representatives, shall be
prescribed in each State by the Legislature thereof; but the Congress may at any time by Law make or alter such Regulations.”
The other is the Presidential Electors Clause, which reads, “Each State shall appoint, in
such Manner as the Legislature thereof may direct, a Number of Electors.”
There’s a thread that links the partisan gerrymandering of congressional maps in North Carolina, attempts to dissolve the Wisconsin Election Commission, and efforts to overthrow the 2020 presidential election in Pennsylvania and elsewhere. In each case, the participants have invoked a dubious interpretation of the Constitution called
the “independent state legislature theory.”
Long relegated to the fringe of election law, the theory will soon be front and center before the Supreme Court, which has
agreed to hear a case concerning the North Carolina congressional maps in the fall. If the Supreme Court were to adopt the theory, it would radically change our elections."
This dubious legal theory could have dramatic consequences for elections.
www.brennancenter.org
The case is already on the Supreme Court docket, as Moore vs Harper, for October.