Avrick Direct has introduced the Self Identified Democrats and Republicans list to the market.
These are internet users who have self-reported their political affiliation, and have also mentioned that they donate to organizations that further the cause of their party/candidate.
Names are all from 100% co-registration sites, and are available for direct-mail, e-mail, appending and book-ending.
This 6,624,626 list is available starting at $80/M.