Obama takes battle to Republican territory

As the US presidential contest saw its final frenzied weekend, a confident Barack Obama promised to heal America's political divisions while rival John McCain fought to hold on to Republican-leaning states and pledged to score an historic upset. For Obama, it was a time for soaring rhetoric and forays deep into Republican territory, buoyed by record campaign donations and encouraging poll numbers. "We have a righteous wind at our back," he said Saturday of his bid to become the US's first black president. For McCain, a former Navy pilot and Vietnam prisoner of war, the weekend was his last chance to persuade voters to defy the polls and sweep him into office. "We're a few points down but we're coming back," he told supporters in Virginia. "I'm not afraid of the fight, I'm ready for it and you're going to fight with me."