so I often wonder if any of it is "worthwhile" as far as actually making a difference.

As far as interesting, it just kind of depends on the day and my mood.  At first I liked the election stuff, but I guess the primary has just gone on too long and the arguments have all recycled themselves.  I still keep up, I just don't comment as much. 

To answer your question, I like discussion of the media coverage of the campaign a little more than the actual discussion of the campaign.  Also I have to admit I enjoy the fun posts.