Nine-month old twin sons Beau and Nick were on hand to join their dad at centerstage.
CNN: AllPolitics - An Overshadowed Keynoter
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Bring your groupie and have a blast at the venue Centerstage Chicago says is where "celebrity hangs in the atmosphere, not unlike the electric halo about the raised DJ pulpit".
BBC: Daily deal: Partying in style on the Magnificent Mile
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Or, catch a show at Centerstage (Insider tip: The Second City the comedic troupe that once claimed the likes of Stephen Colbert, Tina Fey and Amy Poehler as members performs there 'til mid-October).