For some reason, I sympathize with progressive ideas. However, I feel that politicians ruin them with poor implementation and how they sell these ideas to the public.
Take universal health care for example, the manner in which Hillary or Edwards plan to implement it is deeply flawed.
The proper way to sell the idea is to make it a state/local level service that is opt-in and is paid for through taxes, by only those who wish to participate or receive the services. The quality of said services would be wholly reliant on what people choose to put into it.
Additionally, the deeply flawed yet capitalist health care system we currently have wouldn't have be destroyed in order to achieve this. Ideally, private and "socialized" systems should be able to function together if implemented properly.