One thing is that the way Australian political parties work is very different to US. In US although president Biden is a democrat not all the senators from his

One thing is that the way Australian political parties work is very different to US. In US although president Biden is a democrat not all the senators from his party approve what he wants, they have some independent positions. So there are people in Democrat party who will speak against some policies. That doesn't usually happen in Australia. If it was then opposition can at least try. The few times that has happened in on personal ideological grounds like same sex marriage etc.