Hmm, there does seem to be a reasonably strong break towards Labour in the later counted votes. It could mean National end up with as low as 38% (especially after specials). If TPM win 5 seats, there'd be 122 MPs with overhang. That could mean National/Act will fall just short of a majority and require support from NZF.
Which would be making a bleak situation comically worse. The ol' Kingmaker ends up wielding a lot more power than the 1-ish% influence the people meant for him to have.