On how he uses his campaign funds and how he raises money as well why he has raised as much as he has.
Why don't you ask why Ed Burke who has been in the city council for almost 40 years needs just short of $3,800,000 in his campaign fund.
You might want to start with his Wikipedia entry, whomever is making the changes on that suffice to say isn't a big fan. But has given you something to start with. Follow the links, that alone should provide you with a story.