Story highlights Result in Australian general election may not be known for days, as voters leave government in limbo

Conservatives turn on each other as Prime Minister Turnbull's job could be at risk

(CNN) Australians still don't know who won their election, three days after a national vote returned a result too close to call.

On Tuesday, election officials began the task of counting more than a million postal votes, according to the Australian Electoral Commission, including for a handful of crucial seats which may decide who forms the next national government.

Officials said a final result may not be known for at least a week.

Australian Prime Minister Malcolm Turnbull has ignored calls to resign after a poor result for his Liberal/National Coalition government, who had been expected to retain a majority.

JUST WATCHED Australian election too close to call Replay More Videos ... MUST WATCH Australian election too close to call 03:49

Speaking to reporters outside his home on Tuesday , Turnbull told them he was still confident of holding onto power.

Read More