CNN The Lead With Jake Tapper October 6, 2015 20:36:00
Playing offense. >> wow. >> reporter: she's taking to the airwaves, seizing on house republican leader kevin mccarthy's suggestion the committee investigating the benghazi attacks is designed to bring down her candidacy. >> everybody thought hillary clinton was unbeatable, right? we put together a benghazi special committee what happen are her numbers today? >> republicans have spent millions attacking hillary. >> reporter: the first national television ad of her campaign, taking on republicans. but not overlooking the democratic race that's tougher than she imagined. with bernie sanders catch...