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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

North Carolina's state of political hate

By Dave Levinthal

Corporations, advocacy groups spend big on ballot measures

By Liz Essley Whyte

Bloomberg helps Democratic governors' group close gap on Republicans

By Ben Wieder

Ads in U.S. Senate contests turn nasty

By Dave Levinthal

Gubernatorial hopefuls outspend U.S. Senate candidates

By Rachel Baye

Secretive groups spend millions to influence state elections

By Reity O'Brien

Democrats seize air supremacy in Senate battlegrounds

By Dave Levinthal and Michael Beckel