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Charities risked tax-exempt status with political ads

By Rachel Baye

Mary Landrieu abandoned on airwaves

By Dave Levinthal

Election ads were about issues, says 'Carolina Rising' chief

By Carrie Levine

Koch-linked organization uses ‘dark money’ to fight political disclosure

By Michael Beckel

Tell us about your experience with political ads

By The Center for Public Integrity

Nearly 100,000 negative ads helped turn tide in Florida elections

By Michael Beckel, Reity O'Brien and Kytja Weir

Gillespie's rich friends leave him hanging

By Carrie Levine

Ballot measure backers spend big, win big

By Liz Essley Whyte

GOP rides cavalry to U.S. Senate majority

By Michael Beckel, Dave Levinthal and Carrie Levine

Ad war winners take governors' mansions

By Ben Wieder, Reity O'Brien and Rachel Baye

The meanest U.S. Senate races of all

By Chris Kirk and Dave Levinthal

Surprise! No. 1 super PAC backs Democrats

By Carrie Levine and Dave Levinthal

Mega-donors give big to state candidates

By Rachel Baye, Reity O'Brien and Ben Wieder

U.S. Senate races to attract 1 million TV ads

By Michael Beckel and Dave Levinthal

Flush with mystery money, Kentucky nonprofit haunts Grimes’ Senate bid

By Michael Beckel

Power shifts to outsiders in U.S. Senate fight

By Michael Beckel