I think that there could be a prime minister for each political party because in general elections, if someone voted for a party but that party would not win, quite a lot of people end up thinking that it was unfair and it could even result in outbursts. This, however, would be solved if every party won at the same time.
The reason why this might not be a good idea is it would be hard to handle and if it happened then the question would be: Who goes into 10 Downing Street? What I mean by this is that if this happens then there would be no point in a general election, no point in voting for the party but that would mean no one would know who the majority of the country want to be prime minister, and then it might result in arguments who should make up the government and who should do what, which some people would call a 'disaster'.
In conclusion, I am not sure which side I would take on this; I am in the middle but I do know that this could solve some problems, but equally it could also cause some problems within parliament.
I hope you enjoyed this post,