- the Progressive Democrats who want universal national health care,
- the Republicans who desperately want to regain power, and see their route back to power being through defeat of the Democratic Health Care initiative as it was in 1993-94, and
- the conservative Democrats (known as the Blue Dogs) who are concerned about the cost of a health care plan and about local business and financial interests that are critical to their reelection prospects individually.
Here's an excellent addition to the overall discussion - it's a good article on Kent Conrad from the Huffington Post. It'll provide a better understanding of the third major issue group in this great 2009 political battle.