The statement was signed by 11 members of the opposition parties.
It accuses the incumbent Prime Minister, Ahmed Ouyahyia, of supporting President Bouteflika and alleges that he cannot be trusted to be fair.
It also calls for security guarantees for those who will support opposition candidates at the April elections.
The BBC's Mohammed Areski Himuer in Algiers says that although a new law was recently passed to abolish the special vote for the armed forces, only a few people are taking their promise to remain neutral seriously.
One wonders if a boycott of the election is in the works, as during the last election...