This tweet, from @BarackObama, was sent about 30 minutes ago:

In that span of time, it became the most retweeted tweet of all time. In that span of time, the note-image combo was retweeted -- as of this writing -- 298,318 times.

Not only that, but another Obama victory tweet garnered 167,939 retweets tonight in the space of just under 40 minutes:

Which means that President Obama gained another victory tonight: Not only did he retain the presidency, but he outsted none other than ... Justin Bieber. The singer -- before tonight -- held the record for the most retweeted tweet, at (as of this writing) 223,376 retweets:

The president also ousted Green Bay Packers offensive linesman T.J. Lang (98,688 retweets):

... and Floyd Mayweather (89,055 retweets):

We're not waiting for the others to concede. Barack Obama is the clear Twitter winner. Obviously, this is the victory the president will be savoring most tonight.