特朗普为什么会输?
https://www.nytimes.com/2020/11/02/upshot/election-polling-trump-women.html
https://www.forbes.com/sites/jackbrewster/2020/10/31/exclusive-poll-biden-steady-with-under-30-voters-heading-into-election-day-with-one-weakness/?sh=207d9f1060d0
https://www.usnews.com/news/elections/articles/2020-10-26/biden-bolsters-lead-over-trump-among-young-voters
https://www.washingtonpost.com/lifedata-style/data-style/trump-women-vote-polls-2020/2020/10/20/277cf21a-08af-11eb-a166-dc429b380d10_story.html
https://www.nbcnews.com/think/opinion/covid-isn-t-why-trump-losing-seniors-support-it-isn-ncna1242672
https://www.economist.com/leaders/2020/10/29/why-it-has-to-be-biden
https://www.economist.com/briefing/2020/10/29/president-trump-has-had-real-achievements-and-a-baleful-effect