If its a pissing contest to see who can waste more money on stupid projects you can win both. You can praise Labor for wasting billions of taxpayers money on cancelled contracts and roads already in obsolescence, and blame Canberra for immigration or population growth and LNP for building unneeded stadiums. Hell, you can even win the race in QLD for the dumbest train contract the world has ever seen or SA's unreliable power system or Victorias great idea to shutdown coal power plants and leave the state with the highest electricity costs in our history. Your argument about immigration is ill-informed as the subject is very complex and not what either side state is correct. The actual number of new arrivals each year is approx 162,000. The ABS have a formula for this calculation which is basically is if you are granted a visa (any kind) and in Australia for 12 out of 16 months then your a new arrival. Its not really a lot when compared to those here on eduction Visa, Backpackers, Kiwi's etc. Try this link as it may change your mindset about who is lying - headsup - all of them. https://insidestory.org.au/how-many-migrants-come-to-australia-each-year/
