Okay, so you know how there are some people who follow a religion called Christianity? Well, some of those people also like to be involved in the government of Australia. This is called Christian politics.
Basically, these people want the government to make decisions or laws based on their Christian beliefs, like helping people who are poor or sick, or protecting traditional values like marriage being between a man and a woman.
Some Christian politicians are part of a group called the Christian Democratic Party, and they work together to try to make these things happen. Other Christian politicians might be part of different political parties, but they still try to bring their Christian beliefs into the decisions they make as politicians.
Not everyone agrees with Christian politics, though. Some people think that the government should make decisions based on what is best for everyone, not just what one religious group thinks is right. It's important for everyone to respect each other's beliefs and work together to make Australia a fair and just place for everyone.