The big problem we face now, apparently, is that two-party politics is over, but -- and I'm sorry if this sounds like flogging a dead horse, but it is important -- the manner in which we elect our politicians is not geared towards minor parties so that, to some extent, the "wrong ones" are going to play a larger role. Here, I mean wrong ones in the sense of parties that are going to have more role than the public wanted, not necessarily the ones with the wrong policies. An example is the Lib Dems, who look set to be severely hit but still hold on to 20-odd MPs despite being predicted to have a lower vote share than UKIP, who will probably only end up with a couple of MPs. Or the SNP, whose concentrated vote will deliver them at least 40 and probably 50 MPs, which is twice as many as they would have got in a purely Proportional system. Incidentally the Green Party may also get
I'm not saying that we should switch to PR (giving no escape from coalition and with no accountability, pure Proportional Representation is a system that is in practice unsound), but if two-party politics is over then it's time that the system changes to better reflect this. It just does not at the moment. We should at least reconsider the question of electoral reform in light of the election result.
Of course, it may be academic if suddenly one of the main parties latches on to new-found support and delivers a landslide -- but that's unlikely.