As a non American who is very intrigued with US politics it seems to me that neither party cares about anyone in their coalitions.  They both only care how to appease their corp/big donors (who buy their office for them) while playing the propaganda game to core values for the voters.  

In the US citizens are scared of their Gov't in most of the rest of the developed world the Gov't is scared of the people.  US politicians are scared of pissing off big donors while the rest of the developed world politicians are scared of their voters voting them out!

Most other countries deal with these semi aligned coalitions by allowing more than 2 parties and while multi party systems have their flaws (and its often a 2 party race anyways) it allows for more specific platforms and variety.