wellington new zealand labour leader jacinda ardern say sunday would difficult complete coalition talk vote tally election leave major party need nationalist new zealand first party form government speak outside home auckland ardern tell media centre-left party would concede despite lag almost 10 point behind incumbent national party receive 46 percent vote saturday election final tally vote include overseas ballot release oct. 7. new zealand first leader winston peters decline say party favor form coalition government reiterate rush decision new zealand labour leader say yet concede election