Simplify the following text for a Grade 7 native English-speaking person.
Original: Although long-standing allies of the larger and more prominent Labor Party , the Co-operative Party is legally a separate political organization and members of the Co-operative Party do not have to join the Labor Party .
Simplified: It is the political part of the wider British co-operative movement , and all members of the party must be members of a co-operative business . Those who want to stand for election must also be members of the Labor Party .