"Why is it that territory voters are only counted in the national majority and not in the state majority when it comes to passing referendums?"

That is an intersting question, Abigail. Section 128 of the Australian Constitution says that the Constitution can only be altered, or changed, if a majority of voters in a majority of states and a national majority of voters (more than half the voters in Australia) agree in a referendum. The Northern Territory and the Australian Capital Territory did not exist when the Constitution was drafted, so were not included in this provision. However, citizens in the two territories are counted in the national majority.

 

diagram to help explain Why is it that territory voters are only counted in the national majority and not in the state majority when it comes to passing referendums?