AP HEIMLER REVIEW GUIDE (formerly known as the Ultimate Review Packet): +AP Gov Heimler Review Guide: https://bit.ly/3rfXr2Y GET FOLLOW-ALONG NOTEGUIDES for this video: https://bit.ly/3XMSawp Additional HEIMLER REVIEW GUIDES (formerly known as Ultimate Review Packet): +AP US History: https://bit.ly/44p4pRL +AP World History: https://bit.ly/46rfHH1 +AP European History: https://bit.ly/3PCPyiw +AP Essay CRAM Course (DBQ, LEQ, SAQ Help): https://bit.ly/3XuwaWN HEIMLER’S HISTORY MERCH! https://www.youtube.com/channel/UC_bOoi0e3L3SJ1xx5TZWHPw/store Tiktok: @steveheimler Instagram: @heimlers_history Heimler's History DISCORD Server: https://discord.gg/heimlershistory In this video Heimler walks you through Unit 4 Topic 6 (4.6) of the AP Government curriculum which is all about how trustworthy public opinion data is. If polls are created according to scientific standards, they are among the best instruments we have for measuring public opinion. But sometimes they can fail, as they did in the 2016 presidential election between Donald Trump and Hilary Clinton.