Three candidates all favor a single (government) payer system because they will never be in the position to make it work.  They will never have to construct a system that of government sponsored health care that comes close to fulfilling their utopian position.  Because it is so simple minded, single payer becomes a magic wand which automatically makes all things better.say health care is a right.  But actually it is very hard.  They say that health care is a right.  But what happens when the payer starts to ration that right?  How much of a right does everyone get then.  And all single payer systems ration.  They ration because people being people demand too much of that right for themselves.  The house of cards falls down.