RICHMOND, Virginia (CNN) -- A bitter Senate campaign entering its final stretch turned uglier Friday, as a Republican incumbent pulled up sexual passages from novels written by his Democratic opponent, who called the move baseless character assassination. In a news release and list of quotes posted Friday on the Drudge Report Web site, Sen. George Allen, R-Virginia, accused his opponent, former Navy Secretary Jim Webb, of "demeaning women" and "dehumanizing women, men and even children" through his fiction writings. At least two of the listed passages include children in sexual situations.