Bangaon Uttar Assembly constituency

In the 2021 election, Ashok Kirtania of BJP defeated his nearest rival, Shyamal Roy of AITC.

In the 2016 election, Biswajit Das of Trinamool Congress defeated his nearest rival Sushanta Baowali of All India Forward Bloc.

In the 2011 election, Biswajit Das of Trinamool Congress defeated his nearest rival Dr. Biswajit Biswas of CPI(M).

In the 2006 election, Bhupendra nath Seth of Trinamool Congress defeated his nearest rival Pankaj Ghosh of CPI(M).

In 1982, Bongaon legislative assembly constituency had total 109673 electors. Total number of valid vote was 90755. Indian National Congress candidate Bhupendra Nath Seth won and became MLA from this seat. He secured total 46545 votes. Communist Party of India (Marxist) candidate Ranjit Mitra stood second with total 42939 votes. He lost by 3606 votes.

In the 2009 bye-election caused by the election of sitting MLA, Saugata Roy to the Lok Sabha from Dum Dum, Gopal Seth of All India Trinamool Congress won the Bangaon seat.[18][19]

In the 2006 bye-election caused by the death of the sitting MLA, Bhupen Seth, Saugato Roy of Trinamool Congress defeated Pankaj Ghosh of CPI(M).[17]

In the 2006 state assembly elections,[16] Bhupendranath Seth of Trinamool Congress won the Bongaon assembly seat defeating his nearest rival Pankaj Ghosh of CPI(M). Contests in most years were multi cornered but only winners and runners are being mentioned. Pankaj Ghosh of CPI(M) defeated Bhupendranath Seth, Independent and Congress respectively) in 2001[15] and 1996.[14] Bhupendranath Seth of Congress defeated Ranajit Mitra of CPI(M) in 1991.[13] Ranajit Mitra of CPI(M) defeated Bhupendranath Seth of Congress in 1987.[12] Bhupendranath Seth of Congress defeated Ranajit Mitra of CPI(M) in 1982.[11] Ranajit Mitra of CPI(M) defeated Bhupendranath Seth of Congress in 1977.[10][26]

Ajit Kumar Ganguly of CPI won in 1972,[9] 1971[8] and 1969.[7] K.Bhowmick of Congress won in 1967.[6] Jiban Ratan Dhar of Congress won in 1962.[5] In 1957, Bongaon was a joint seat. Ajit Kumar Ganguly of CPI and Manindra Bhusan Biswas of Congress won in 1957.[4] Jiban Ratan Dhar of Congress won in 1951.[3]