Apa format and each discussion should be 150 words and separate all discussion and cite them

Discussion 8 (a)
1. Explain the role that interest groups are supposed to play in a democratic society and the benefits they provide for members and society as a whole.  
2. Evaluate how well interest groups actually provide these benefits and discuss any disadvantages society suffers as a result of interest group activities.

Discussion 8(b)
1. Compare and contrast interest groups and political parties.  
2. Examine the advantages each has that the other does not. Be sure to provide specific examples to support your claims