A Democratic super PAC goes after Rep. Connie Mack for past legal troubles by comparing him to actor Charlie Sheen.
Conservative political nonprofit continue to blanket airwaves with attack ads in Senate races.
Patriot Majority USA kicks off long-term campaign targeting billionaire Koch brothers
Restore Our Future sitting on $20 million-plus
Conservative nonprofit American Future Fund attacks Senate candidates in Florida and Wisconsin
Crossroads GPS hits North Dakota's Heitkamp with the second round of ads in as many weeks
Heavy-hitting outside groups release five negative ads in 24 hours
Republican ads say Obama's promise of 'hope and change' hasn't materialized for voters.
AFL-CIO super PAC goes after Romney and Ryan on coal and Medicare
RNC, nonprofit group introduce 'America's Comeback Team'
