From an AP article:
What is mystifying is why Blagojevich spoke so openly and so brazenly. He knew the feds were looking into his administration for the past three years for alleged hiring fraud; one of his top fundraisers has been convicted, another is awaiting trial. He even warned some associates not to use the phone because "everybody's listening ... You hear me?"
Blagojevich also is no neophyte. He was baptized in the nitty gritty of Chicago Machine politics and confirmed in back-room bargaining and big money deals. He spent years climbing the ladder, first as a state representative, then a congressman and finally governor. He was boosted to power by his father-in-law, Alderman Dick Mell, a veteran Democratic ward boss and longtime stalwart of the once mighty Machine. The two became estranged in recent years. [emphasis added]
The second paragraph solves the "mystery" of the first paragraph. (And where does the author get "once mighty" machine from? The machine just churned out a president - seems like its might is intact.)