A new Hillary ClintonHillary Rodham ClintonHannity: I won't discuss Seth Rich story for now "out of respect for the family" Clinton slams Trump's budget: 'An unimaginable level of cruelty' Trump’s crisis of legitimacy 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 TrumpPoll: More people view NATO favorably EPA chief jabs California’s environment push David Letterman: ‘Makes me sick’ that Trump represents us MORE and Ted CruzTed CruzLobbying World GOP skeptical of Trump plan for paid parental leave GOP talks of narrowing ‘blue-slip’ rule for judges 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.