We'll know who won eventually. But when? Saul Loeb /AFP/Getty Images hide caption itoggle caption Saul Loeb /AFP/Getty Images The Two-Way When Will We Know Who Won? November 5, 2012 Everybody tries to predict who will win.What we wonder, though, is when will we know whether it will be President Obama or Republican challenger Mitt Romney taking the oath of office next January? See if you can correctly predict.