Kalchini Assembly constituency

In the 2016 West Bengal Legislative Assembly election, Wilson Chapramary of TMC defeated his nearest rival Bishal Lama of BJP.

In the 2011 West Bengal Legislative Assembly election, Wilson Chapramary (GJM supported Independent) defeated his nearest rival Binay Bhushan Kerketta of RSP.

In the 2009 by elections caused by the election of the sitting MLA Manohar Tirkey of RSP to the Lok Sabha from Alipurduars (Lok Sabha constituency), Wilson Champamari, Independent candidate supported by the Gorkha Janmukti Morcha defeated his nearest rival Sandip Ekka of Adivasi Vikas Parishad.

In the 2006 state assembly elections, Manohar Tirkey of RSP defeated Paban Kumar Lakra of Congress.

Debendra Nath Brahma Mandal and Anima Hoare, both of Congress, won in 1957 when it was a joint seat reserved for ST.