From the article: "Exactly what that team of dozens of data crunchers was doing, however, was a
closely held secret. “They are our nuclear codes,” campaign spokesman Ben
LaBolt would say when asked about the efforts. Around the office, data-mining
experiments were given mysterious code names such as Narwhal and Dreamcatcher.
The team even worked at a remove from the rest of the campaign staff, setting
up shop in a windowless room at the north end of the vast headquarters office.
The “scientists” created regular briefings on their work for the President and
top aides in the White House’s Roosevelt Room, but public details were in short
supply as the campaign guarded what it believed to be its biggest institutional
advantage over Mitt Romney’s campaign: its data." Read more