Was turnout associated with the composition of Labour, Tory, and Reform votes?

Was turnout associated with the composition of Labour, Tory, and Reform votes? An excuse to test drive the {compos} package, by David Firth and Fiona Sammut, which implements the generalized Wedderburn logit model. See preprint by Firth and Sammut (2023), Analysis of composition on the original scale of measurement.

Knitted output over here.