"… e Center for Public Integrity and the Center for Responsive Politics has found that more than 100 nonprofits organized under section 501(c …"

"… Chamber of Commerce, with other groups, such as the Center for Competitive Politics.Allen Dickerson, the legal director of the Center for Competitive Politics …"

"… Politics.Allen Dickerson, the legal director of the Center for Competitive Politics, says that the DISCLOSE Act would impose "burdensome" requirements on poli …"

"… reation in 2010, the Center for Public Integrity and Center for Responsive Politics found that about 15 percent of super PAC spending has been done by groups …"

"… han any other non-disclosing group, according to the Center for Responsive Politics, a non-partisan, nonprofit group that tracks money in Politics.The outside …"

"… nbsp;in the 2010 midterm elections, according to the Center for Responsive Politics.Between January 2011 and mid-June of 2012 alone Crossroads GPS spent more …"

"… GPS in 2010, according to research by the Center for Responsive Politics.Crossroads GPS threw support behind Heather Wilson, a former congresswoman …"

"… imates peg the number as much lower.According to the Center for Responsive Politics, the Chamber has spent more than $900 million on lobbying since 1998 and h …"

"… Election Commission, according to an analysis by the Center for Responsive Politics.Its goal for the 2012 election cycle was to spend $50 million on political …"

"… to as high as $157 million in 2010, according to the Center for Responsive Politics.Donohue’s goal as CEO, Business Insider reported, was to “build the bi …"

"… t is not required to publicly reveal its donors, the Center for Responsive Politics discovered past donors have included the shadowy Center to Protect Patient …"

"… feating Rep. John Boccieri, D-Ohio, according to the Center for Responsive Politics.In 2011, the 60 Plus Association supported Republican Jane Corwin, who los …"

"… that opposed Democratic candidates, according to the Center for Responsive Politics. It spent the most, $622,000, opposing Democratic House candidate Dina Tit …"

"… pated in 20 House and Senate races, according to the Center for Responsive Politics, including more than $3 million on ads opposing Democrat Charlie Wilson, w …"

"… .7 million to nearly $11.4 million, according to the Center for Responsive Politics. 2010 was also the first time the group ran ads expressly advocating for o …"

"… ehind the U.S. Chamber of Commerce, according to the Center for Responsive Politics. Ahead of the 2012 election, the group spent more than $11 million on ads …"

"… for close to 15 percent of its income that year.The Center for Responsive Politics also uncovered several other donors to the group including the Republican …"

"… organization. These gifts were first reported by the Center for Responsive Politics.The American Future Fund has been a prolific funder of negative ads, many …"