What is a phrase expressing the aim of a group or party?
Hello, and thank you for your question.
It will be difficult to give an accurate answer without having the context in which this phrase exists. However, I would assume that in this instance, the word 'aim' refers to 'view' or 'standpoint'. I could also safely assume that the phrase 'group of party' refers to 'a number of people'. So, the phrase could be rewritten as: '___expressing the standpoint of a number of people____'.
I hope that this answer has proved helpful to you. Please feel free to ask another question if this explanation doesn't fully answer your question.