The best thing about the US presidential debate is the fact that it deflected attention from the "car crash" unfolding in the Labour party , according to journalist and former Labour politician Tom Harris.
Yesterday McDonnell, the shadow chancellor of the Exchequer, told the Labour party conference he and Corbyn would run an "interventionist government" if they came to power, adding: "In this party you no longer have to whisper it, it's called socialism".
Harris, who now runs his own company offering lobbying and political strategy advice, told Julia Hartley-Brewer: "Thank goodness the US presidential debate overshadowed the Labour conference. The last thing the Labour party needs is coverage of the conference.
"I thought McDonnell's speech was very typical of his new persona. He's trying to project himself as a reasonable, moderate individual, but also as a red-blooded socialist.
"It sounded to me like a leadership pitch. I still maintain that McDonnell’s medium-term game is to take over from Jeremy Corbyn.
"They think the people are going to be fooled into believing, come the general election, that Jeremy Corbyn and John McDonnell are just nice, ordinary, moderate individuals, who just want to be nice in government," he added. "It is just a car crash in slow motion."
Listen to the full interview to find out more