Facebook, which had announced the ban as part of measures to combat misinformation on its site, had previously said the ban would last at least a week but could be extended.
“While multiple sources have projected a presidential winner, we still believe it’s important to help prevent confusion or abuse on our platform,” Facebook said in the email, seen by Reuters.
A company spokesman declined to comment.
As false claims about voting integrity multiply on social media, Alphabet Inc's Google also appears to be sticking with its post-election political ad ban.
The company, which had said the ban would last at least a week after polls closed on Nov. 3, declined to answer questions about when and how the restrictions would end.
A Google spokeswoman previously said the company would lift its ban based on factors such as the time needed for votes to be counted and whether there was civil unrest.