US President Joe Biden has blamed his disastrous debate performance against Republican rival Donald Trump on a “bad night,” vowing that he would not drop out of the race as calls for him to do so grow. In his first televised interview since last week’s debate with ABC News on Friday, Biden described the evening as a “bad episode,” but said there was “no indication of any serious condition.” Pressure on Biden to step aside as the Democrats’ 2024 presidential candidate has been growing from within his own ranks since he faced off against Trump at a 90-minute televised debate on June 27. During t…