The probability that more federal MPs will fall foul of the constitution over dual citizenship status is 99.96 per cent, according to an astrophysicist.
Eight MPs have resigned or been ruled ineligible because they were dual citizens, making them ineligible to sit in parliament, and there were questions raised on Friday about whether Energy Minister Josh Frydenberg has Hungarian citizenship.
Greens Leader Richard Di Natale recruited a boffin to crunch the numbers, to bolster his case for constitutional change and audit.
"The probability that there are more members of the lower house who are ineligible to stand is 99.96 per cent," he told reporters in Melbourne.
"The likelihood that given there are five senators (ineligible) out of a chamber of 76 and only one in a chamber of 150 is 0.04 per cent."
The Turnbull government has flatly rejected Federal Labor's proposed circuit breaker to the crisis - a universal disclosure process for MPs.
"It is gutless leadership to fob off the Australian people and say nothing to see here," Opposition leader Bill Shorten told reporters in Melbourne.
He said parliament has become a circus, was in danger of losing the faith of the Australian people, and accused the Prime Minister Malcolm Turnbull of hypocrisy.
"Turnbull set a standard for me which he won't he won't set for his own party," Mr Shorten said, referring to Mr Turnbull's demands that the Labor leader prove he was not a dual citizen.
But Mr Turnbull maintained his position that any parliamentarians with doubts about their colleagues should refer the matter to the High Court.
"We stand for the rule of law and we stand for the constitution, rather than trading in innuendo, " he told reporters in Perth overnight.
