I'd have thought most of the stuff Janie mentioned could be got for free, given the will, and most of the rest needn't cost too much. Political parties are voluntary organisations, and volunteers don't need paying; that takes care of a lot of the potential costs. Not by any means all, but a lot.

One slightly bizarre alternative I have read is being promulgated is that instead of the delegates appointed by the barred elections being excluded they should be included - but they should be allocated in equal number to each candidate. The idea being that the states involved would be "represented". But the votes would make absolutely no difference either way, since they would cancel each other out exactly.

I think they need to bite the bullet and find the cash for re-runs. And use a little native intelligence to keep the cost moderate.