canberra australia high court begin three-day hear tuesday determine eligibility seven lawmakers may hold dual citizenship case could determine whether government able maintain razor-thin majority australia parliament rock revelations august seven politicians include deputy prime minister two cabinet members prime minister malcolm turnbull coalition government dual citizens mean potentially ineligible hold elect office australia constitution turnbull unpopular center-right government hold one-seat majority parliament mean future could rest outcome citizenship crisis seven lawmakers accept dual nationals time election last year government argue five include three cabinet members clear unaware contravene constitutional requirement time australian solicitor-general stephen donaghue urge seven justices high court interpret constitution literally donaghue say instead constitution disqualify politicians prior knowledge may dual citizens take reasonable step investigate renounce second citizenship need rule could come soon thursday high court rule deputy prime minister barnaby joyce sole low house lawmaker catch crisis ineligible turnbull need win support one three independent lawmakers keep minority government joyce acquire dual citizenship new zealand-born father say submission court believe father renounce new zealand citizenship bear know 10 father still new zealand citizen joyce say turnbull government already minority upper house senate high court disqualify seven lawmakers face government reshuffle lose two cabinet members senators support turnbull continue languish near six-month low political analysts believe might receive boost able win passage same-sex marriage bill turnbull government high court approval last month stage non-binding postal survey issue widely popular among australians result poll announce nov. 15. australian high court sit resolve lawmakers citizenship crisis