The Pew Research typology, arrived at by factor analysis rather than theoretical constructs of what a liberal or conservative are, identifies three types of Democrat.
I make statements about liberals frequently, without making that distinction, which possibly indicates that I am not making it mentally as much as I should, either. In addition to Solid Liberals, there are New Coalition Democrats or Hard-Pressed Democrats. When I am writing, I usually mean only the first of the three. That is the media and academy group that is most prominent, and it is the group I come out of.
I apologise to anyone unfairly caught in the generalisation.