Writing in the New York Post, pollster Craig Charney makes exactly the right point about the Democrats? success at candidate recruitment this year ? and why liberal activists are ridiculously misstating the ideological meaning of the outcome:

… [T]o win [competitive] seats, Democrats needed candidates who took a more moderate posture, particularly on social values. How moderate? Some 27 of the 40 most competitive Democratic House candidates pledged, if elected, to join the centrist New Democratic Caucus – a group that is anathema to the party’s liberals.