WASHINGTON - It was an intimate political gathering: Sen. John F. Kerry [related, bio] playing host to about 100 of his richest friends. Kerry huddled with his top fund-raisers Monday night in his Georgetown mansion, preparing a massive money push aimed at keeping the defeated presidential nominee's ambitions alive. ``He wants to keep his team together,'' said one member of Kerry's national finance team. ``He's looking ahead. He will be a strong voice in the party.'' Strategists say Kerry will use his new political action committee, Keeping America's Promise, to promote his agenda, help party causes and keep his army...