Thứ Sáu, 28 tháng 10, 2016

NPR News: The Social Science Research Behind Political Campaign Ads

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The Social Science Research Behind Political Campaign Ads
U.S. presidential candidates advertise in battleground states to increase voter turnout. But a new study says ads also have a big impact on campaign contributions.

Đọc thêm tại NPR
at October 28, 2016 at 04:03PM
Health & Science
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