All that is required for the Democratic Party to recover its political footing is to acknowledge that the agenda of the party's most liberal supporters has not won the support of a majority of Americans -- and, based on that recognition, to steer a more moderate course on the key issues of the day, from health care to the economy to the environment to Afghanistan.

For liberals to accept that inescapable reality is not to concede permanent defeat. Rather, let them take it as a sign that they must continue the hard work of slowly and steadily persuading their fellow citizens to embrace their perspective. In the meantime, liberals -- and, indeed, all of us -- should have the humility to recognize that there is no monopoly on good ideas, as well as the long-term perspective to know that intraparty warfare will only relegate the Democrats to minority status, which would be disastrous for the very constituents they seek to represent.