<Tr> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> </Tr> <Tr> <Td_colspan="2"> Buchanan </Td> <Td> </Td> <Td_colspan="2"> 45.28% </Td> </Tr> <Tr> <Td_colspan="2"> Frémont </Td> <Td> </Td> <Td_colspan="2"> 33.11% </Td> </Tr> <Tr> <Td_colspan="2"> Fillmore </Td> <Td> </Td> <Td_colspan="2"> 21.53% </Td> </Tr>

Who was the first president elected as the nominee of a party