Dedicating the party's victory in the Kaliaganj assembly seat by-poll to the people of West Bengal, Chief Minister Mamata Banerjee on Thursday said the BJP is getting paid back for its "arrogance" and for "insulting" the people of the state.

Tapan Deb Sinha of the TMC won the Kaliaganj seat by defeating his nearest rival Kamal Chandra Sarkar of the BJP by 2,304 votes, EC officials said.

The TMC is also leading in two other assembly segments, Kharagpur Sadar and Karimpur, by 15,000 and 28,000 votes respectively.

"We dedicate this victory to the people of Bengal. The BJP is getting paid back for its arrogance of power and for insulting the people of Bengal," she told a TV channel.

The ruling party’s victory is considered as a huge setback to the BJP because the saffron camp had a sweeping victory in north Bengal by bagging seven out of eight seats in the 2019 Lok Sabha elections.

Union minister Deboshree Chowdhury had secured a lead of more than 56,000 votes in the Assembly constituency in the Lok Sabha polls.

The initial trends from the other two constituencies also indicate big leads from the ruling Trinamool.

The trend after the seventh round of counting out of 16 in Kharagpur(Sadar) constituency is reflecting a setback to the saffron camp as Trinamool Congress candidate Pradip Sarkar is leading by 11,946 votes.

The seat is considered as a prestige fight for the BJP as its state president Dilip Ghosh was elected from there in 2016 Assembly elections with a margin of more than 5,000 votes.

In 2019 Lok Sabha elections, the margin was increased to more than 45,000 votes.

The seat fell vacant after Ghosh was elected as an MP from Midnapore.

In Karimpore, Trinamool candidate Bimalendu Singha Roy secured the lead with a margin of 27,771 votes after counting of fourth round out of 13.

The CPI(M) and the Congress, instead of trying to strengthen themselves, are helping the BJP in West Bengal, Banerjee said.