<P> Having been ratified by the requisite three - fourths of the several states, there being 17 states in the Union at the time, the ratification of the Twelfth Amendment was completed . It was subsequently ratified by: </P> <Dl> <Dd> 14 . Tennessee: July 27, 1804 </Dd> <Dd> 15 . Massachusetts: 1961 (after rejection: February 3, 1804) </Dd> </Dl> <Dd> 14 . Tennessee: July 27, 1804 </Dd> <Dd> 15 . Massachusetts: 1961 (after rejection: February 3, 1804) </Dd>

The last person to be elected under the 12th amendment was