A political party is like a group of friends who want to do things together. They have certain ideas about how to make things better for everyone, and they work together to try and make those ideas happen.
A party political foundation is like a grown-up version of that group of friends. It's an organization that supports a certain political party by giving it money and resources. These resources can be used to help the party communicate its ideas to people, to organize events or campaigns, or to give support to candidates who are running for office under that party's banner.
Just like how you might join a club or sign up for a sports team to be part of a group of friends, some people choose to support a political party by becoming a member of its foundation. This means they give money to the foundation so that it can support the party's goals.
Overall, a party political foundation is like a tool that a political party can use to help make its ideas a reality. It's there to support the party and give it the resources it needs to succeed in making positive changes for the people it represents.