A new Hillary ClintonHillary Diane Rodham ClintonClinton asked if she'd be Bloomberg's vice president: 'Oh no' Trump launches three-day campaign rally blitz Free Roger Stone MORE presidential ad takes aim at her “dangerous” Republican rivals. 

“Think about it. One of these Republicans could actually be president,” the ad’s narrator says as Republican presidential candidates Donald TrumpDonald John TrumpFed saw risks to US economy fading before coronavirus spread quickened Pro-Trump super PAC hits Biden with new Spanish-language ad in Nevada Britain announces immigration policy barring unskilled migrants MORE and Ted CruzRafael (Ted) Edward CruzTed Cruz takes aim at Alabama vasectomy bill: 'Yikes' 'Medicare for All' will turn into health care for none Cruz 'impresses' his daughter with Chris Evans meeting MORE are shown talking about bombing American enemies. 

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“They’re backward, even dangerous,” the narrator adds, saying that Clinton is the only Democrat who “can stop them.” 

The ad, titled “Incredible,” is set to air in New Hampshire and Iowa.  

A Republican National Committee spokesman slammed Clinton for "doubling down" on "failure." 

"Under President Obama we've become less prosperous, less safe, and less free but incredibly Hillary Clinton wants to not only double down but expand on this legacy of failure," spokesman Michael Short said in a statement. 

Watch the ad above. 

--Updated at 7:40 p.m.