Twenty-four politically active nonprofits — including some of the biggest names in dark money — have devoted more than half their total spending to influencing elections in at least one year between 2008 and 2013, a Center for Responsive Politics analysis shows. At least three have done so more than once.
A new feature on OpenSecrets.orgdisplays the percentage rankings. Because nonprofits file their annual tax returns, called Form 990s, long after the spending takes place, the data does not yet fully account for spending that took place in the 2014 midterms.