‘Little evidence’ for claim universities are ‘left-wing bastions’

"Some evidence" would be a more accurate headline than "Little evidence", as there is evidence for left-leaning bias, but not for homogeneity. Homogeneity of opinion could be disproved by even a small minority of dissenters from the mainstream view. Also, the main complaint concerns the humanities, so it is unfortunate that these are not separately analysed in the study - presumably because the source data is too aggregated.

Why is the comparison group other professionals, rather than the general population? I suspect that professionals are more left leaning than the total population, so what the paper actually finds is that academics are even more left leaning than the rest of the population. Hardly disproves the idea they are left wing bastions.