I wouldn't call progressive policy a "failure". It's outcome is exactly what the progressives want: a failed economy and social unrest. High unemployment, war, terror attacks, high domestic crime rates, are all part of the progressive Agenda. Those all create fear, and a fearful population craves safety. Safety from violence, safety economically as well. Once a population is that fearful, they will be more inclined to elect the progressives that promise safety nets for them, even though they never have any intention of fixing those issues. Issues they've caused to happen in the first place.
Conservatives should let go of this notion that progressives "mean well" but are just too dumb to realize their policies hurt the country. That might be true for the "social liberal" who doesn't pay much attention to politics, but the progressive turds know exactly what their policies are doing. Accept the fact that progressives want to see all white, Christian, and capitalist cultures exterminated. They hate Western culture, and want to see it destroyed, which is exactly why they embrace Islam. Even though Islam is counter to everything "socially liberal", Muslims will definitely help the progressive cause of destroying Western culture, its the one thing Muslims are good at.