The former governor said Obama represented the best hope for an America facing an economic crisis.Former Republican Gov. Arne Carlson endorsed Democratic presidential nominee Barack Obama today, saying Obama represented the best hope for an America facing an economic crisis and criticizing Republicans for waging a mean-spirited campaign that has "been going down all these side roads." Introduced to a standing ovation at the State Capitol by U.S. Sen. Amy Klobuchar, a Minnesota Democrat, Carlson said his party had strayed from the moderate philosophies of past Republican leaders such as Ohio Sen. Robert Taft and President Dwight Eisenhower. "I consider...