Looking at the way politicians play the game, you'd be forgiven for thinking that all parties are entirely different, with no shared values, which is obviously not the case. In our own, smaller UK context, one almost never sees cross-party approval in debates: they constantly show themselves at loggerheads on everything. It's so silly and unrealistic, yet that's apparently how they have to play it to get the votes of the faithful.
They all have good and bad ideas; why on Earth can't they use the best of both?
Yes, two main parties are stronger than four or five weaker ones, but unless coalitions can be made to work, seems no way out of the tennis match - the singles one.