Prior to the U.S. elections, both Twitter and Facebook announced their plans for adding warning labels to posts by candidates and campaigns that claim victory in advance of official election results.
This move was specifically initiated due to an increased number of mail-in ballots that can potentially cause delay in final results.
On the election night, Twitter announced that it would be placing labels to tweets like "official sources called this election differently", or "official sources may not have called the race when this was tweeted".
Twitter also added in an updated blog that it would keep contact with state election officials and national news outlets as official sources for election results.
Facebook on the other hand, planned to add specific information in news feed notifications in its apps as well as labels on posts that claim premature victory of a candidate or party. Moreover, Facebook said it will keep a check on various issues in real time on the election day, such as reports of voter suppression content.
Facebook will not only consider posts made by election candidates or campaigns but also those of U.S. based accounts with a following of over 100,000 users, as well as accounts with significant engagement.