A supporter sends a photo on his mobile phone during a campaign rally for U.S. President Barack Obama at Loudoun County High School in Leesburg, Virginia.
Barack Obama's Arlington, Va., campaign office looks a lot like a kindergarten classroom, with walls decorated with butcher paper, tempera paint and colored marker. But on a recent Saturday morning, Ian Redman, a 19-year-old field organizer wearing Converse high-tops patterned after the American flag, sat there glimpsing the future of politics in his hand. "This is what is really cool," the Wisconsin native said to a handful of volunteers around him, who all looked down at their smart phones.
The volunteers tapped along on their individual screens, exploring deeper into the electioneering app that the Obama campaign released in August. Tap...
