Sen is Trinamool Congress candidate from Bankura Lok Sabha while Supriya a BJP candidate from Asansol Lok Sabha constituency.
The six parliamentary constituencies going to the polls in fourth phase include Jhargram, Midnapore, Purulia, Bankura, Bishnupur and Asansol.
"With this, so far five candidates each have filed their nominations from Jhargram, Bishnupur and Asansol parliamentary constituencies, while four candidates have filed from Purulia and Bankura constituencies and three from Midnapore Lok Sabha constituency," said Amit Roy Chowdhury, OSD in CEO's office.