Attacks on John Kerry’s war record may be beginning to have an impact, polls suggest, amid raised voices and new TV ads on a subject at least temporarily dominating debate in the close US presidential race.

LAWYERS for presidential hopeful John Kerry yesterday attacked "false and libellous" political adverts by former Vietnam veterans who claim the senator shot a fleeing teenager during the war and lied to win medals.

Lawyers for presidential hopeful John Kerry today attacked “false and libellous” political adverts by former Vietnam veterans who claim the senator shot a fleeing teenager during the war and lied to win medals.