His constitutional election to the office was completed with the meeting of the Electoral College on December 15, 2008, and the subsequent certification of the college's vote by the Joint Session of the United States Congress on January 8, 2009. Based on the results of the electoral vote count, Barack Obama was declared the elected President of the United States and Joseph Biden was declared officially as the elected Vice President of the United States in the 2008 presidential election. The Headquarters of Obama's campaign was in his home town of Chicago, Illinois.