Buzz, I think it's fair to say that not everyone who pays $0 in taxes is "on the dole". There can be working people who are in low-paying jobs that still end up in the no-tax-due position. However, even those who are working could be under the misimpression that all safety nets would be removed with a new administration ... that is the fear being planted by the Obama campaign.
OTOH, I think that there is plenty of waste/fraud in the welfare system, even the SSI system, that can be remedied. I can recall that not long ago a man was identified in Philadelphia collecting welfare under 7 different names! I have seen the system "gamed" first-hand. Until we find a means of detecting fraud (and/or waste) we will never quite know the extent of the problem.