"Every Borg unit can see what all the other units see," Mr. Adams writes. "They share data and react in unison. Similarly, the data feeding the central Catalist database is coming from a wide swath of sources. Public records, pollsters, campaigns, nonprofits, activist groups, unions, parties, commercial data. For example, when an environmental group does neighborhood door-knocking for cash, the results of those contacts are fed into Catalist."
"The bottom line is that they don't need the independents anymore, so they don't need to moderate their message," Mr. Adams told me. "This is why Obama can keep veering sharply left without fear of losing elections.