According to a Gallup poll, "a majority of Democrats and liberals say ... they have a positive view of socialism, compared to a minority of Republicans and conservatives." Thankfully, members of both parties respond positively to "small business, free enterprise, and entrepreneurs." The terms polled are noteworthy--Walter Lippmann invented the term "big business" as derisive, just as Marx (or his contemporaries) did for "capitalism."
Democrats today appear to be very much in the spirit of the man FDR called "their commander-in-chief," the future president who declared that socialism and democracy are in principle the same.
While Dems (apart from the outbursts of a silly staffer, of which the Hill is full) will likely not begin appealing explicitly to socialism, its functional equivalents of community, civil society (of a certain sort), and solidarity may appear more often in their rhetoric. They would be better off heeding Bill Galston, who tries to dispute Harvey Mansfield's assault on Obamacare.
Over 20 years ago the late John Wettergreen loved to call out liberals who labelled themselves "civic republicans" or such, in the spirit of the founders. He once got a prominent American historian to admit that her talk of "republicanism" was simply a "chicken word for socialism." Gallup seems to confirm that more on the left have gotten the courage of their convictions, or at least of their feelings.