I really doubt there are going to be many Democrats of any stripe to support Ron Paul.
Plus it doesn't matter right now anyway. They can't vote for him in the primaries. He needs Red Republicans not Blue Democrats.
The PPP poll says Paul does pretty good among Democrats and Independents in Iowa, and you can change your party registration up until the caucus day in that state. The data I saw (either PPP or IA, don't remember) wasn't statistically significant, but still, there you go. Not all Democrats hate Paul.
http://www.publicpolicypolling.com/main/2011/12/paul-leads-in-iowa.html