Does this mean that conservatism is past its time and that liberalism is the mandate of the future?
No, it doesn't. Liberalism's continued success depends on many factors, but two in particular. First, it must paint the political alternative, conservatism, as the faction of social injustice, as anti-immigrant, anti-entitlement, anti-regulation and so on. The Obama campaign did that effectively in this election without an equally effective conservative response. One presumes that conservatives will be ready in 2016.
Second, and more important, effective state intervention of the sort liberals propose depends almost entirely on a state that is strong economically and socially. It is here that liberalism falls short in the long term. The various liberal constituencies are in fact atomized groups of individuals who are relying on government, rather than creating the economic growth or fostering the social and civic health necessary to sustain the ideal liberal state.
Whereas liberals see entitlements as the immediate response to economic injustice, many fail to realize that they alone cannot rebuild a middle class. In fact, they can have the opposite effect in the long term and insulate their recipients from upward mobility. With $16 trillion in national debt, an aging population and an already-overburdened entitlement system, the ideal liberal social welfare state can only sustain itself for so long before it collapses under its own weight. It is a lifeline attached to a slowly sinking ship.
Whereas liberals celebrate subsidized birth control and the unmooring of what they see as narrow-minded religious moral standards, they fail to realize the alternative that is right in front of them: out-of-wedlock birth rates that are at all-time highs and a destructive breakdown in the family unit.
Absent strong, active, character-forming institutions, like families, schools, and churches, single mothers and low-income households in many cases have no where else to turn but to the government. The problem is that liberals often confuse such allegiance with successful governing.
The liberal coalition of the future looks more like Greece, an advanced secular, social welfare state, than the idealized liberal glory days of FDR.
http://www.cnn.com/2012/11/28/opinion/bennett-liberalism