WAMU and the Investigative Reporting Workshop obtained legislative records to analyze more than 1,000 contracts that were sent to the D.C. Council for approval from 2007 through January 2014. The reporters also analyzed more than 100,000 campaign contributions to D.C. officials and candidates from the Office of Campaign Finance from 2005 through January 2014. This allowed us to capture contributions made two years before or two years after votes on the contracts.