Why would you expect Aboriginal people to all vote as a bloc? Nobody does that, regardless of heritage. Expecting them all to vote left wing because you think it would progress their interests is in the same line as someone from the right expecting all white people to vote for them to preserve perceived privileges.

We don’t even have have such a clear political split in groups which would gain direct benefit from progressive parties such as welfare recipients. You’d think that would make for a clear choice between the party that wants to either keep or increase your source of money and the party that wants to cut it, but there’s a lot who still vote conservative either because they believe something else in that side of politics is more important or they simply don’t care enough to think through the ramifications.