United States - Barack Obama Re-elected As President

Barack Obama has been re-elected as President of the United States, and he's taken another prize as well — he can now lay claim to the most popular tweet of all time. The tweet, which simply states "Four more years" alongside a photo of Obama embracing his wife Michelle, has been retweeted over 320,000 times and counting. Buzzfeed points outthat this beat the previous record — said to have been set by Justin Bieber — after just 22 minutes, and the gap has since risen to more than 100,000.

Twitter's Government feed has also confirmed that this year's Election Day was the "most tweeted about event in US political history," with over 20 million tweets. The service saw a rate of 327,000 tweets per minute following news of Obama's re-election.