Better strategy
Best way for supporters of the permanent repeal of the death tax to win is to frame the issue not in terms of taxation but rather family values. It doesn't matter how rich or poor a person may be, when he dies and passes his earthly possessions, his lifetime's work and achievements, to his close, loving survivors, what he chooses to leave to his grieving family is none of the government's damn business, period.
Message to the greedy government bureaucrats and control freaks - keep your grubby paws off our personal family business!