How Effective Have Donald Trump’s and Ted Cruz’s Campaign Ads Been?

Voter reactions a few days before Iowa

Donald Trump's support among blue collar voters doubles when Ted Cruz attacks him in ads, but those same attacks boost Cruz's support among middle-class men. And while Trump's ads don't help him much, they do drive voters away from Cruz.

@ChrisAriens chris.ariens@adweek.com Chris Ariens is the managing editor and director of video at Adweek.
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