[1] It was earlier part of Darjeeling (Lok Sabha constituency) In the 2011 election, Abdul Karim Chowdhury of Trinamool Congress defeated his nearest rival Sayeda Farhat Afroz of CPI(M).

He was suspended from the party but the Raiganj MP, Deepa Dasmunsi, campaigned for him.

Faruque of CPI(M) won the Islampur assembly constituency defeating his nearest rival Abdul Karim Chowdhary of Trinamool Congress.

Contests in most years were multi cornered but only winners and runners are being mentioned.

Faruque Azam of CPI(M) defeated Abdul Karim Chowdhary of Congress in 1987.