Wow. Wow…. Wow. That U.S. presidential debate was…well… I’m still searching for the right words. I’m a former Washington correspondent for The Canadian Press and covered politics in Canada, but in all my years I’ve never seen a politician implode like Joe Biden did on Thursday night.

The aftermath has been even worse of the U.S. president. Members of his own Democratic party have been calling for him to withdraw his candidacy. Could that even happen now? And if so, how could a new leader be picked given the primaries have come and gone. Who could replace him as the Democratic candidate? Well, for your long weekend reading, we’ve got answers to those questions.

It was also a tough week for another progressive leader. Justin Trudeau’s leadership has also come into question after his Liberals lost one of its safest seats in a Toronto byelection. Trudeau was once the darling of young voters, but that too has changed.

Long weekends are a good time to escape from politics. But before heating up the BBQ or heading to the lake, have a quick read of the smart political analyses on Biden’s and Trudeau’s troubles that I’ve assembled from across The Conversation network.

Happy Canada Day and given the long weekend, we won’t be back in your Inbox until Tuesday.

Scott White

CEO | Editor-in-Chief

Biden and Trudeau: Will they stay or will they go?

Biden crashes, Trump lies: A campaign-defining presidential debate

Mary Kate Cary, University of Virginia; Karrin Vasby Anderson, Colorado State University

Scholars of communication and politics assess a presidential debate with a clear loser, but no clear winner.

Joe Biden’s debate disaster – who could replace him on the Democrat ticket in November?

Caroline Leicht, University of Southampton

Joe Biden’s poor debate performance has prompted widespread speculation that the Democrats will seek another nominee for November’s eleciton.

Biden v Trump: what are the five things we learned from the presidential debate?

Dafydd Townley, University of Portsmouth

US academic Dafyyd Townley watched the debate and gives his rundown of key moments.

Joe Biden could still stand down before the election – here’s how and what would happen next

Thomas Gift, UCL

If Biden decided not to stand again, another Democratic candidate could still be selected until the party’s convention.

Byelection shocker: Is this the end of the road for Justin Trudeau’s political career?

Sam Routley, Western University

The stunning byelection loss in a reliably Liberal Toronto riding doesn’t bode well for the political future of Prime Minister Justin Trudeau.

Justin Trudeau’s bleak poll numbers are part of a global trend as young voters reject incumbents

Stewart Prest, University of British Columbia

In democracies around the world, voters aged 18-34 are abandoning the incumbent in favour of opposition parties, often choosing populist-style politicians. Why? Blame the broken social contract.

The Conversation Weekly podcast

Who designed the FGC-9? Unmasking the man behind the world’s most popular 3D-printed gun – podcast

Gemma Ware, The Conversation

Rajan Basra explains the backstory to the FGC-9, the world’s most popular 3D printed gun - and his search for its anonymous creator. Listen on The Conversation Weekly podcast.