It's not 1:6. For NZD to go back half-way from 0.68 to 0.74 we would have to force Fed speakers to retract their comments about Dec hike, modify Sep projections, forget Yellen telling to look through inflation weakness and delete this week's US CPI report. For another half we'd have to find evidence that there was Russian interference and re-run election Venezuela style that puts National back in charge. Since 0.68->0.74 is 600 pips, this means that OP has some inside knowledge that Winston Peters wants to mandate RBNZ to defend the 0.67 floor. This is the only plausible explanation why a g10 currency cannot fall more than 1.5%.
I also wonder why it should return to 0.74. At 0.74 RBNZ were talking the currency down as overvalued. At 0.68 they are happy. It's a long period from elections through policy formulation and policy implementation to inflation impact, so it will be a while before we learn how looser fiscal policy and more infrastructure spending specifically exacerbate the builders supply-side constraints and push up domestic prices. For now we will be in limbo on NZD side for more than a month until GDP print, next RBNZ meeting or inflation print, so USD and AUD developments are about as important. My opinion is that markets craved for inflation. New gov is more likely to deliver inflation and require hikes than cause a slowdown and require cuts/postpone hikes, so why sell NZD*?
*- other than NZD being overvalued at 0.74
NZD is discussed in posts #1, #4 and #5 out of 15 posts, so I am not sure NZD is the actual topic here. Can I buy indulgence for being offtopic by posting an NZD comment?