The first clause of the first sentence of Amendment 12 of the U.S. Constitution is a puzzling construction.
The electors shall meet in their respective States and vote by ballot for President and Vice-President, one of whom, at least, shall not be an inhabitant of the same State with themselves;
What does this mean? Suppose the Presidential and Vice-Presidential candidates are of the same state. Electors must meet in their respective States and vote in that state. Thus all of these people (the President and VP candidates, and the electors) will all be of the same state.
It seems a self-contradictory requirement.