This morning, I had a feeling that the Telegraph’s story about Tory preparations for a Boris Johnson coup was going to be the big story of the day, hence why I dashed off a quick post about it. In my defence, how was I supposed to know that the Prime Minister would manage to forget what football team he supposedly supports?

Yes, I know it’s trivial to care about what football team a politician supports, but I think it also shows just how manufactured Cameron’s public image is that he felt the need to invent one, instead of just honestly saying that he was never that much into club football but enjoyed watching England. But that would be an honest answer and thinking outside the box, which isn’t the sort of thinking you hire a PR man for.

Even that failed to distract from the main story of this election: everyone except Nicola Sturgeon going slightly batshit about the rise of the SNP. Today we had Nick Clegg making comments about how he wouldn’t go into any deal with the SNP, which of course had various members of the party up in arms and pointing out that it wasn’t his decision. Not that the media ever actually pay attention to the ways political parties work, of course. Clegg responded by sending out an email to members that walked back his comments somewhat.

However, what concerns me in all this is that general message going out here is that the SNP are to be excluded from power (and especially UK-wide government) at all costs. There’s a concept in political science (and part of my dissertation) called the ‘structure of competition for government’. This is related to the overall party structure in a polity, but relates how parties interact in government formation. For instance, until 2010 Britain had a closed structure of competition – only two parties got to be in Government, and they alternated with each other. Other countries (Sweden, for instance)have more open structures, but the parties tend to be structured in blocs (usually of left and right) and while there’s movement between parties, there’s normally alternation between the two blocks and no crossover between them. There are also very open systems like the Netherlands, where a variety of coalitions come together in government with no real fixed pattern.

The interesting thing about Britain is that the structure of competition has blown wide open since 2010, with the old two-party structure seemingly gone. We’re in a position where a new – and possibly much more open – structure is being formed, and this election will be crucial in that process. However, while we may get an open structure, it will also be a very skewed one if one party remains locked out of power because all the potential partners for them won’t come to any agreement with them. That doesn’t have much effect when it’s a small fringe party with a handful of seats but when it’s a party with a significant number of seats it has a major effect on government formation. You can ignore them all you want, but they can still vote in Parliament.

As examples, consider what’s happened in Sweden and Germany recently. Both have relatively large parties that are excluded from being part of government formations (the Sweden Democrats on the right in Sweden, and Die Linke on the left in Germany), but taking them out of the equation makes it very hard for traditional groupings of parties to form a majority. In Sweden, neither left nor right could get a majority, and Germany had to have a CDU-SPD grand coalition because nothing else would form a workable majority.

Beyond the whole issue of telling the people of Scotland that their votes don’t count if they cast them for an unapproved party, excluding the SNP from any say in power runs the risk of leaving no workable coalitions except for a grand coalition between Labour and the Tories. I still think it would take us two inconclusive elections to get the point where one could be formed, but we’re going to get to a point where that’s the only logical solution left on the table. Well, we could go for electoral reform and an entirely new system that reflected the people’s views much better than the current one, but that would be really crazy talk.

After that long rant, and because it’s getting late we’ll combine today’s obscure party and dip into Election Leaflets with the Pirate Party. They’re standing six candidates in the election on the typical Pirate programme of internet activism and digital rights, but what I think is interesting is the look of their literature which manages to break out from the usual bright primary colours and smiling photos of the candidate style of usual election leaflets. It’s something different, and they’re raising important issues (even if I’m far from being convinced about their stance on copyright) that others aren’t, so maybe something of them – either design or policy – might be picked up by other parties in the future.

Twelve days to go. Hopefully the press won’t have completely exploded in incandescent fury at the SNP and demanded the tanks be stationed at Berwick by then.