canberra australia high court say thursday aware need rule eligibility seven lawmakers quickly warn could guarantee speedy resolution case threaten government one-seat majority parliament parliament rock august seven lawmakers include deputy prime minister barnaby joyce two cabinet minister say hold dual-citizenship potentially rule ineligible hold elect office uncertainty put government future spotlight court aware need speedy decision always possible immediately say chief justice susan kiefel court decision determine whether prime minister malcolm turnbull maintain shaky grip power court rule joyce sole low house lawmaker catch crisis ineligible turnbull need win support one three independent lawmakers keep minority government remain six politicians embroil case senators seat would assign alternatives political party potential deal independent politician would allow turnbull government continue special election joyce seat hold likely november joyce popular among rural voters dominate local constituency already indicate stand re-election renounce new zealand citizenship august special by-elections extremely volatile lucky turnbull joyce may stand country australians seem trust prime minister say nick economou senior lecturer australian politics monash university melbourne support rural voters overwhelmingly back turnbull razor thin re-election last year fall low level two years newspoll australian newspaper monday show australian court say guarantee speedy rule citizenship crisis