"Don't worry. You will not allow a single person on polling date to vote for other parties," Islam said at a publice meeting at Sainthia.
"Don't allow one person on that day to vote for CPI(M), Congress or BJP," Islam said. "I hope you will make this promise and shoulder responsibility to fulfill the same," he added.
The remark follows a recent controversial comment by party leader Anubrata Mondal about the opposition.