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Sold-out event at Chicago's House of Blues was expected to bring in up to $100,000 for the campaign.
Her performance Monday night at Chicago's House of Blues was the first fundraiser for Emanuel's campaign that allows cameras inside.
The sold out $30 to $500 event was expected to bring in up to $100,000 for the campaign.
Just how did Hudson get hooked up with Emanuel?
Ben Labolt, spokesman for Emanuel says "she offered to help out" after Emanuel met Hudson at a White House event last year.
Former White House Social Secretary Desiree Rogers organized the event.
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