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, except as to the Places of chusing Senators.
The president doesn’t control that. The federal government doesn’t even control that.
That’s a state by state situation.
Correct:
US Constitution, Article 1, Section 4
Technically there’s no requirement that any of the citizens of a state be allowed to vote in their state’s elections.
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