According to a recent Pew study:
A majority of Democrats have a more positive impression of socialism than of capitalism, which implies that they prefers socialism over capitalism:

Only about one third of whites has a positive impression of socialism, but two thirds of blacks and a majority of hispanics:

Also note the split in the impression of socialism by education: socialism is most popular with people who have a postgrad education. At the same time, support for capitalism goes as expected with respect to both education and income, with those earning more and/or having a higher education showing stronger support. Support for socialism goes down with increasing income, as expected. The true outlier is the high support for socialism among the postgrads.
Put together, this indicates that support for socialism is probably particularly strong among those who have a high formal education but a comparatively low income. Not sure if the numbers differences are really significant though.
And the preference for socialism over capitalism among Democrats is largely driven by women and young folks:

Source:
https://www.pewresearch.org/fact-tank/2019/06/25/stark-partisan-divisions-in-americans-views-of-socialism-capitalism/?utm_source=Pew%20Research%20Center&utm_campaign=0492b47f26-EMAIL_CAMPAIGN_2019_06_28_01_26&utm_medium=email&utm_term=0_3e953b9b70-0492b47f26-399356041This post was edited by Black XistenZ on Jun 30 2019 01:33pm