What is the best way to fix a leaky bath tub stopper?

The best way to fix a leaky bathtub stopper is to first identify the cause of the leak. This could be due to a worn-out gasket or a loose connection. Once you have identified the issue, you can either replace the gasket or tighten the connection to stop the leak. If you are unsure how to do this, it is recommended to seek the help of a professional plumber.