This is kind of a simplistic post in which I ask more than answer a question.  But I am quite interested in the answer – and its kind of more abstract party political than some of our usual posts, but please bear with it – and drop an answer in the comments!

As a PhD student, I also do some part-time work as a Teaching Assistant, taking first year classes on politics. So, this week – their mid-semester break – I’ve been spending my time marking 60-odd essays of varying quality.

Anyway, they were on several different topics, but one of the questions was “how many parties are important in the British party system?”. And I had a wide spread of answers – incorporating everything from one (a party in government) to seven (for various reasons) and many in between.  I had students arguing that only Labour and the Conservatives were important (for historic reasons) and that, even though they were in government, the Lib Dems were not important. I had importance stretching to all parties with MPs. Indeed, I had so many different interpretations of what important meant (size of party on seats/ votes/ membership; position as government/ opposition; devolved status; influence on policy; blackmail potential) that I wasn’t even sure what important meant. The thing is, I guess, is that there is no right or wrong answer. As long as they could define important in a realistic and sensible way and make a coherent argument as to why parties were important, they got a good mark.

But the issue has become more interesting to me, because although I don’t think there is a right answer, I wondered what folk thought. Now obviously the question has its flaws (“British party system” implies only Westminster, but they are studying British politics, so that’s why) but I wondered if we could discount any parties from being important? I mean, obviously, with 650 MPs, Westminster is a big place, and if you have less than 10 MPs (so, everyone bar Lab/Con/LD) you don’t have much influence. But then you can make the case that only the government have any power (and therefore importance…) but that discounts the second largest party – and counts the third largest!  You can see the issue. And why should we use representation as a yardstick anyway? In a democracy surely views are still important whether or not they are represented in Parliament, which would make the parties without representation contenders to be “important”? And though parties like the BNP and UKIP have no MPs, they do have Lords, MEPs or councillors, so they have representation, just not in the House of Commons.

I guess I’ve opened up a can of worms. And as I said above, I’m not sure there is an answer to this, but I’m interested to know what readers think. Where do we draw the line? Which parties in Britain are important – and which are not? And how do we define important anyway?