Another possibility is that this is essentially tribalism (essentially a variant of politics as the mind killer). Women are more likely to have viewpoints favoring what is called the liberal end of politics. In that context, general perception of what ideas one is supposed to be loyal to may result in more males being pulled in one direction and more females being pulled in the other direction.
Edit: ParagonProtege has provided a link to the original study. Thank you! (^_^)
Link.
Can this be reasonably explained by self-interest? Female and male economists' views are probably coloured by gender solidarity. Government jobs may be more likeable to women than men because of their recorded greater risk aversion. Regardless of the reason government jobs are more important for women than for men. Also in the US where the study was done middle class white women benefit quit a bit from affirmative action in government hiring.
Politics is the mind-killer probably does play a role in explaining the difference.
First two points are somewhat congruent with stereotypes. Anyone who has run into the frequent iSteve commenter "Whiskey" will probably note that the third point indicates women may not hate hate HATE lower and middle class beta males in this case.
This seems plausible since politics is about applause lights after all, the tribes are what matters not the particular shape of their attire. But might value differences still be behind the gender difference? Maybe some failed utopias I recall reading aren't really failed.
Somehow I think this does not include ideological diversity.
No mystery here. (^_^)