US President Joe Biden hit back at his critics following a poor performance in his first television debate with challenger Donald Trump during a campaign appearance in Raleigh, North Carolina, on Friday. “I would not be running again if I didn’t believe with all my heart and soul I can do this job. Because, quite frankly, the stakes are too high,” Biden called out to a cheering crowd. The president appeared fitter than he had during the Thursday evening debate, when he stumbled and paused awkwardly. “Folks, let me tell you why I’m here in North Carolina … I’m here in North Carolina for one r…