The announcement was made while the social network is preparing for some unusual elections, due to the large number of votes cast by mail, which could lead to delays in the final results.
Twitter said that from election night until the inauguration, it would place warning labels such as “official sources completed this election differently” or “official sources may not have stated the election result when the tweet was published.”
U.S. accounts with more than 100,000 followers and a significant commitment will also be considered for labeling, Twitter said.
Social media companies are under pressure to combat election misinformation and prepare for possible violence or intimidation at polling stations.
In an updated blog, the company said it would consider state election officials and national media outlets, such as ABC News, the Associated Press, CNN and Fox News, as official sources for the election results. Their official Twitter accounts will be exempt from tagging.