You can use this calculator to simulate which New Zealand Labour MPs would be elected in an MMP elected.
Enter the total number of MPs you want to simulate, and optionally select which electorate seats the party has won, then click the Calculate button.
The default settings are the results of the 2017 election (46 total MPs and the electorates that the party won).
When the 2020 party list is released this calculator will be updated.
This will behave very strangely if the total number of MPs is less than the number of electorate MPs, I'll try and fix that up soon.
I'm planning some additional features for this. If you have any great ideas of your own, or find any bugs, please send me an email ([email protected]).