Second Senate race in Georgia heading to run-off

The race is heading to a run-off (John Bazemore/AP)

David Perdue and Jon Ossoff will face each other in a run-off for a Senate seat, one of two high-profile contests in Georgia that could determine which party controls the upper chamber.

Libertarian candidate Shane Hazel was able to get enough votes so that neither Mr Perdue nor Mr Ossoff was able to clear the 50% threshold needed for an outright win.