While former President Donald Trump received a hero’s welcome at the Republican National Convention, President Joe Biden is facing mounting pressure to drop out of the race. On the ground at the RNC, CNN’s Political Director David Chalian sits down with Ryan Lizza, POLITICO's Chief Washington Correspondent and host of the podcast “Playbook Deep Dive”. They talk about Biden’s candidacy teetering on possible collapse and how an assassination attempt on Trump’s life reshaped his convention.?