https://techcrunch.com/2021/01/25/facebooks-ad-library-targeting-political-ad-election-data/

Starting next month, Facebook will open up academic access to a dataset of 1.3 million political and social issue ads, including those that ran between August 3 and November 3, 2020 — Election Day in the U.S.

Facebook’s Ad Library, launched in 2019, offers a searchable database of all ads running on Facebook and Instagram. Implemented after the 2016 Russian election interference fiasco, the database allows researchers and reporters to drill down into ads by topic, company and candidate, displaying data about when an ad ran, who saw it and how much it cost.