A superpac could carpet-bomb a market with TV adds without the "permission" of the candidate whom they are supporting....so I think they can be very dangerous in that someone without a large superpac behind them may be simply drowned out.
Which is probably what is happening/happened in state wide elections leading to Democratic losses. Scott Walker may be a living proof surviving the recall and then getting reelected.
__________________ The issue today is the same as it has been throughout all history, whether man shall be allowed to govern himself or be ruled by a small elite. Thomas Jefferson
__________________ The issue today is the same as it has been throughout all history, whether man shall be allowed to govern himself or be ruled by a small elite. Thomas Jefferson