US Democratic presidential nominee Senator Barack Obama (D-IL) speaks to a potential voter during his visit to a United Auto Workers Union call center for Obama's presidential election campaign in Indianapolis, Nov. 4, 2008. [Xinhua/Reuters Photo]
US Republican presidential nominee Senator John McCain (R-AZ) fixes his hair after casting his ballot at his polling place in Phoenix, Arizona Nov. 4, 2008. [Xinhua/Reuters Photo]
