The Rasmussen tracking poll of a possible matchup between President Obama and former Massachusetts Gov. Mitt Romney shows Obama with a ten point lead in their polling. The Ras national tracking poll is an average of 500 automated interviews a night over three days. "This is the largest lead the president has enjoyed against Romney in regular polling going back more than a year," Rasmussen wrote in its analysis. "It’s also the first time that the president has reached the 50% level of support against Romney."