I am an Aussie, dont like Tony Abbot or most of his policies and didn't vote for him or his party but I believe that a carbon tax is NOT the right solution to climate change. The RIGHT solution is a trading scheme, one designed in a way that will cap the total amount of carbon pollution allowed at a number smaller than it is now to force emitters to reduce their emissions. One that doesn't allow the purchase of cheap carbon permits from overseas, the use of carbon offsets (e.g. tree planting) or the use of carbon capture and storage but instead requires genuine reductions in carbon emissions.
One that includes big incentives to anyone who owns a coal fired power station and is willing to shut it down and replace it with something that isn't coal (i.e. specifically targets coal power as "public enemy #1" in the war on carbon emissions)
Targeting emissions from burning of oil in cars (the other big piece of the carbon jigsaw) can be done through measures like CAFE but without all the loopholes the US system has like the one that lets automakers make their big gas-guzzling SUVs flex-fuel capable and get a benefit even though most of those cars will never be run on biofuels to any significant degree or the one that distinguishes between cars and "trucks" (which includes the aforementioned gas-guzzling SUVs) and distorts the incentives in favor of SUVs, crossovers, CUVs and big pickup trucks whilst distorting things against wagons and smaller pickup trucks.