Updated On: 06 November, 2012 01:05 PM IST | | Agencies
Starting in 1792, US presidents and vice presidents have been elected quadrennially on the election day, the first Tuesday after the first Monday of November.
On Tuesday, voters will again cast their ballots to choose the next president between Democratic candidate Barack Obama and Republican hopeful Mitt Romney, and draw to an end the year-long election campaign of 2012.
US voters only cast their ballots for a slate of electors of the US Electoral College, who in turn elect the president and vice president, reported Xinhua.