moment asjoe biden and donald trump face in atlanta. good evening and welcome to newsnight, live on weeknights and packed full of political vitamins, interviews and tonight insights about the rematch betweenjoe biden and donald trump that kicks off in three and a half hours. donald trump s are playing, it has just arrived in atlanta. and we are waiting for him to disembark from that. it has landed for at least three minutes but no sign of him. last time 73 million americans watched the debate. polls suggest this time it could be even higher with 115 million voters likely to tune in. lets go straight over to to cnn hq in atlanta, who are hosting the debate, to the spin room, to speak to catriona perry, the bbc s chief dc presenter. any sense of mood? absolutely, the excitement is any sense of mood? absolutely, the excitement is building any sense of mood? absolutely, the excitement is building already - any sense of mood? absolutely, the excitement is building alread