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

Four more years. twitter.com/BarackObama/st...

-- Barack Obama (@BarackObama) November 7, 2012

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:

This happened because of you. Thank you.

-- Barack Obama (@BarackObama) November 7, 2012

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:

RIP Avalanna. i love you

-- Justin Bieber (@justinbieber) September 26, 2012

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

Fuck it NFL.. Fine me and use the money to pay the regular refs.

-- TJ Lang (@TJLang70) September 25, 2012

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

Manny Pacquiao I'm calling you out let's fight May 5th and give the world what they want to see.

-- Floyd Mayweather (@FloydMayweather) January 10, 2012

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.