The Nation--representing the hard-left of the Democratic Party--beats up on the moderates in the party, especially the Democratic Leadership Council. Yet, they think that even the DLC is now being forced to move Left. They explain why this is so. Very revealing article. Although it is not the intention of the authors, by reading this piece you will learn why the Demos will remain the minority party. 
I think the Democratic Party would be wise to ignore the rantings of The Nation and re-emphasize the values of the DLC.