Chief Electoral Officer Sunil Gupta told reporters that till 6 PM, when the voting closed, 66.2 per cent of the electorate exercised their franchise.
However, Gupta pointed out, as there were people still in the queue in some booths, the final percentage might increase by one or two per cent.
"The election was peaceful. There were no incidents of booth capturing or jamming," the CEO said when asked about allegations made by some political parties of malpractices during the polling.
Gupta said the polling percentage was less than recorded in the 2009 general elections and the 2011 Assembly polls.
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In the 2009 general elections, the voter turnout was 74.47 per cent and in the 2011 state Assembly elections the voter turnout in seven Assembly segments under this constituency was 77.74 per cent.
He said, "It is a general trend in the state for the last 20 years in which we have seen lesser voter turnout during by-polls."
The by-poll was held to fill the vacancy left by the death of sitting Trinamool Congress MP Ambika Banerjee.
The BJP did not field any candidate. A total of 13 candidates were in the fray.