In the wake of the large sums of out-of-state anonymous donations that flooded into California during the 2012 election,the Legislature took up SB27, which would require political nonprofits to identify their donors in California elections. So Trent Lange of the California Clean Money Campaign, and along with allies including California Common Cause,Credo Action, Courage Campaign, or MoveOn.org,and others, launched a campaign to bag the bill passed.
Source: moveon.org