Obama to stump for Warnock in Georgia Senate runoff

Former President Obama will campaign for fellow Democrat Georgia Sen. Raphael Warnock in the closing days of the incumbent senator's runoff election to keep his Senate seat. 

Obama will headline an event Dec. 1 – five days before runoff Election Day. 

Warnock's general election contest was so close with GOP challenger Hershel Walker – with neither getting over 50% of the vote – that the candidates were required by the state to go to a runoff, according to the Associated Press.

Democrats control the Senate and as a result of the midterm elections will also control the chamber in Congress' next session. If Warnock wins in the runoff, Democrats will have a majority of 51 seats starting in January, which means they would no long need Vice President Kamala Harris' tie-breaker vote. 

Obama stumped for Warnock in October, during the general election and has been critical of Walker, saying that he is unprepared to be a senator.