While East Midnapore district recorded 85.09 per cent polling, 82.71 per cent votes were cast in Cooch Behar. The overall average till 5 PM was 84.24 per cent.
Two Trinamool Congress candidates in Cooch Behar district faced the poll panel's ire for allegedly interfering with the electoral process and threatening polling personnel.
FIRs were lodged against Rabindranath Ghosh, TMC candidate from Natabari and Udyan Guha from Dinhata following complaints from the respective returning officers.
Over local issues, some people at two booths at Moyna constituency in East Midnapore district boycotted today's poll, officials said.
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The police said that altogether they made 30 arrests during the day, out of which 29 were preventive arrests.
For the first time since Independence, 9,776 residents of border enclaves in Cooch Behar were eligible to exercise their franchise, made possible by the formal inclusion of the enclaves in the Indian territory last year.
State chief electoral officer Sunil Gupta said enthusiasm was noticed among the first-time voters over 80 per cent of whom turned out at the polling booths.
An electorate of over 58 lakh was eligible to cast ballots at 6,774 polling stations till 6 PM in 25 constituencies.
In all 170 candidates, including 18 women, are in the fray in this phase.