How Some US Presidents Rank According To IQ

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John Tyler (estimated IQ: 136)

Thought Co.

He was the 10th US President, after serving briefly as the 10th US Vice-President. After only a month into the new administration, he became President after the death of his running mate William Henry Harrison. He was the first vice-president to succeed to the presidency without election. It set a precedent that governed future successions and was codified in the 25th Amendment. But he was not a popular President. Historians rate him as an obscure President. Most of his Cabinet resigned soon into his term. Tyler was the first President to see his veto of legislation overridden by Congress.