Well history is theoretically on their side on that one. No democracy in history has ever pulled itself out of a downward spiral. Once the ideal of radical egality is mentioned it cannot be expunged from the collective psyche. Even so called conservatives use socialist rhetoric these days, if for no other reason that they have no choice; for once democracy was accepted as the common currency of our political debate it is unavoidable. To achieve power you must say things that will appeal to the masses (hence the “if your not with us” line, which has never really been backed up and was merely an attempt to appease the masses).
Democracies all die, either from outside conquest or internal, but it is a forgone conclusion, thats why the founding fathers did everything they could to limit democracy here in the states. For they knew that democracy is no friend of liberty, and will likely lead to expropriation (socialism).
The problem with the, poorly named, liberals is they believe that because socialism is a natural result of the egality, which is inherent in the very idea of democracy, it is thus good. A dictatorship of the proletariat (assuming that they are the majority) is as true a democracy as you can get. Our society is free precisely because it doesn't give into the philosophy that democracy can only be just in a radically egalitarian system. But egality is still the idol of the democratic ideal, it's even paradoxically on the FR seal on the main page next to the mutually exclusive principal of liberty.
It is not only good, it is the correct state of Creation. However, Creation is fallen and this state can not be achieved until it is restored.
Shalom.