The Libertarian Democrats: [Oppose "big government" when it comes to the economy, and also oppose big government interference in personal matters, such as religion and lifestyle decisions.] "About 9 percent of all Democrats."

This group contains the highest percentage of full-time workers as well as the largest proportion of Democrats earning more than $50,000 a year.

NYT has updated this analysis in A Guide to the Political Herds:

Here is an attempt to portray various philosophical and political factions under the Republicans' big tent ...

Here is an attempt to portray the major coalitions and blocs among Democrats ... Rather than the donkey, perhaps the cat, notoriously resistant to herding, would make a better symbol.

RE: Washington Post Article Describes Pro-Freedom Democrats