An alliance leader, meanwhile, declined to say whether its candidates would be filing nominations on Sunday.
"We've plenty of time until tomorrow. We'll observe the developments until then and take a decision," Abdul Jalil, Awami’s League general secretary told reporters late on Saturday after a meeting of alliance leaders.
"Everything is possible, if the government is sincere," he said.
The alliance, which has been staging strikes and transport blockades, has demanded the removal of two election commissioners, saying they are biased toward its rivals, a four-party coalition led by former Prime Minister Begum Khaleda Zia.
The country's interim government has asked one of the disputed commissioners to go on leave.