Monty Python’s Black Knight was a doomed fictional character, but Premier Jason Kenney’s fight with members of his own UCP caucus is very real. Kenney’s caucus has voted to kick out two high profile members, after their public denunciations of Kenney’s leadership, with one even calling for the premier’s resignation. This follows weeks of public dissent by UCP MLAs over Kenney’s pandemic response, and constituency chiefs demanding a leadership review. The question is how much more can Kenney’s leadership withstand? Is he “invincible” like the Black Knight? Kathleen Petty looks at what’s going on with Katy Merrifield, Kenney’s former director of communications, Globe and Mail columnist Kelly Cryderman and columnist Rick Bell of the Calgary Sun.