Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. How a Winner is Declared in US Presidential Election Dora Mekouar WASHINGTON - Many people assume the winner of the U.S. presidential contest is determined once the media calls the race and the losing candidate delivers a concession speech. But the truth is that formally declaring a presidential winner is a months-long process that won't be completed until January. That process essentially involves Americans voting for electors, the electors voting for the president, and then Congress declaringthe winner. .