LI, Yimeng; HYUN, Michelle; ALVAREZ, R. Michael. Why Do Election Results Change After Election Day? The "Blue Shift" in California Elections. preprints.apsanet.org. 2020-03-27. Dostupné online [cit. 2020-09-28]. doi:10.33774/apsa-2020-s43xx. (anglicky)
LI, Yimeng; HYUN, Michelle; ALVAREZ, R. Michael. Why Do Election Results Change After Election Day? The "Blue Shift" in California Elections. preprints.apsanet.org. 2020-03-27. Dostupné online [cit. 2020-09-28]. doi:10.33774/apsa-2020-s43xx. (anglicky)
LAI, Jonathan. How does a Republican lead on election night and still lose Pennsylvania? It’s called the ‘blue shift.’. https://www.inquirer.com [online]. [cit. 2020-09-28]. Dostupné online. (anglicky)
Data firm predicts election 'chaos' as Trump seems to win in a landslide before losing as more votes are counted. theweek.com [online]. 2020-08-31 [cit. 2020-09-28]. Dostupné online. (anglicky)