A by-poll was also held for the Galsi assembly seat in Burdwan district.
Election Commission's special observer for the state Sudhir Kumar Rakesh noted that he could not say if polling was peaceful but the elections were free and fair like the earlier phases.
Communist Party of India-Marxist politburo member Surjya Kanta Mishra however claimed that the elections were "a total farce" in Arambagh constituency "where none of the rules of law and civil behaviour were followed".
"There was so much irregularity in Arambag that even the conditions which have to be fulfilled for seeking repoll cannot be done in most of the booths where the Trinamool ran amok," he alleged.
"There was also rampant booth capturing in the other constituencies. We demand repoll in 826 polling stations in these eight seats," said Mishra, who alleged the Election Commission has failed in carrying out its responsibilities, and the central forces were either "inadequate" or not properly deployed.
