Lots of people have been explaining that a hung parliament would be unable to rein in public spending. Do the figures support this idea? I’m sitting in my kitchen with a political data nerd who’s just pulled this gem out of his back pocket. It’s from this document on this page of the Institute for Government website, and it’d be nice if someone like this could make a less ugly version. The y-axis is how much you borrow, the x-axis is the size of your biggest party, and it seems to show that countries with single powerful parties tend also to have worse government debt. Just a piece of the puzzle, but I give it to you for free.