In a run up to the assembly poll in Himachal Pradesh scheduled for November 4th, the star campaigners of various political parties have started addressing poll rallies to woo voters.AICC General Secretary, Rahul Gandhi who addressed a rally at Keylong in Lahaul-Spiti, today, said that efforts would be made to construct an airport at Spiti so as to benefit the people of this remote area.BJP leader Sushma Swaraj is also arriving at Sundernagar today to address a rally. Our correspondent reports that tackling corruption has emerged an important issue in the campaign with leaders of political parties trading charges against each other.