Here's the way I see it, if in fact the Republicans are hearing from their constituents that they overwhelmingly disapprove of the affordable health care act then they are in fact doing their jobs and putting their foot down and saying no health care act or at least not this version of it. Now do I approve of them waiting until the last moment to do this, not in the least this should have been hashed out long ago. Also for me its more about the way that the health care act is being pushed through. It's unconstitutional and if they want to proceed they need to create an amendment and go from there.
Also I found it funny that Obama accused the Republicans of using their ideology to push their agenda on this country and causing this mess when thats exactly what he is also doing.
That being said I'm sure its more the lobbyist and big business that is driving the Republicans because thats how we roll in this day and age.