For years, state Democratic parties have been gathering information about individual voters' political leanings. They have noted down the opinions voters shared with canvassers — which candidates they said they supported or their positions on policy issues.
Now, the record of what people told Democratic volunteers may go up for sale — and not just to political groups. Democrats are looking into whether credit card companies, retailers like Target or other commercial interests may want to buy the information.
State Democratic party leaders formed the National Voter File Co-op in 2011 to sell their voter data to approved groups like the NAACP. The goal was to recoup some of the money local Democratic parties spent collecting and updating their local voter lists, which include voters of all parties.
Source: Propublica. Read full article. (link)