<Tr> <Td> </Td> <Td> Hugh Lawson White </Td> <Td> December 28, 1832--March 4, 1833 </Td> <Td> President pro tempore </Td> </Tr> <Tr> <Td> </Td> <Td> Martin Van Buren </Td> <Td> March 4, 1833--March 4, 1837 </Td> <Td> President of the Senate </Td> </Tr> <Tr> <Td> </Td> <Td> Richard Mentor Johnson </Td> <Td> March 4, 1837--March 4, 1841 </Td> <Td> President of the Senate </Td> </Tr> <Tr> <Td> </Td> <Td> John Tyler </Td> <Td> March 4--April 4, 1841 </Td> <Td> President of the Senate </Td> </Tr>

Who fills in for the minority leader when he or she is absent