<Tr> <Td> 6 </Td> <Td> Tribhuvana Narayana Singh </Td> <Td> </Td> <Td> 18 October 1970 </Td> <Td> 3 April 1971 </Td> <Td> 167 days </Td> <Td> Indian National Congress (O) </Td> <Td> </Td> </Tr> <Tr> <Td> 7 </Td> <Td> Kamlapati Tripathi Chandauli </Td> <Td> </Td> <Td> 4 April 1971 </Td> <Td> 12 June 1973 </Td> <Td> 2 years, 69 days </Td> <Td> Indian National Congress </Td> <Td> </Td> </Tr> <Tr> <Td>--</Td> <Td> Vacant (President's rule) </Td> <Td> </Td> <Td> 13 June 1973 </Td> <Td> 8 November 1973 </Td> <Td> 148 days </Td> <Td> N / A </Td> <Td> </Td> </Tr> <Tr> <Td> 8 </Td> <Td> Hemwati Nandan Bahuguna Bara </Td> <Td> </Td> <Td> 8 November 1973 </Td> <Td> 4 March 1974 </Td> <Td> 2 years, 21 days </Td> <Td> Indian National Congress </Td> <Td> </Td> </Tr>

List of chief ministers of uttar pradesh from 1947