The by-election of the National Assembly will be held on February 8.
A Cabinet meeting held on Thursday made the decision to this effect.
Khimlal Bhattarai’s post has been lying vacant after he tendered his resignation from the upper house of the federal parliament. He was elected from Lumbini Province.
Prime Minister Pushpa Kamal Dahal had held a discussion with the Election Commission for the by-election of the National Assembly.