Scholars have missed this ultimate check and balance in the "silence of the Constitution". No state can keep any legal candidate off the ballot, but a state can keep anyone off the ballot who does not provide legal documentation they are qualified to be President. That is the Constitution at it's core in the Articles concerning the Presidency. 49 states can state a fraud can be President in their super majority, but if one state demands proof and the candidate does not provide that legal proof, the one state in checks and balances can negate a national Presidential Election.
...The experts will try to state that .. can not override a majority vote by 49 other states, ..A President must be accepted by all 50 states according to legal Constitutional requirements. Any subject failing to provide natural born status can legally be rejected by any one state, and that one state in its minority rights will negate the other 49 states in the check and balance the Founders left silently in the Constitution to protect America from threats domestic and foreign.
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Whoever wrote that didn’t read the damn Constitution. The electoral college votes and submits said votes to the Congress to be counted. The person receiving a majority of the electoral votes “shall be President.” It doesn’t say a damn thing about all 50 states. It says a majority of all electoral votes apportioned. So if GA, for example, refuses to allow Obama on the ballot, the electoral college in GA still gets to submit their votes (likely for someone else) to Congress to be counted. If Obama has a majority without GA. He’s in again.