The election was on Tuesday November 3rd, and Pfizer announced their results on Monday November 9th. They were only notified of the results the previous day.

https://www.nytimes.com/2020/11/09/health/covid-vaccine-pfiz...

> Dr. Jansen said she learned of the results from the outside panel of experts shortly after 1 p.m. on Sunday, and that the timing was not influenced by the election. “We have always said that science is driving how we conduct ourselves — no politics,” she said.

Edit: It would be nice if the people downvoting this could explain why you disagree.