Updated 07/25/14 – 6:13 a.m.

(CBS) — First Lady Michelle Obama came to Chicago Thursday to help rake in money for Democrats, grab dinner, and catch a Beyoncé concert.

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At a fundraiser at the Waldorf Astoria, the president’s wife spoke before more than 100 people and urged supporters to dig deep in their contributions to Democrats for the mid-term elections. Gov. Pat Quinn was in attendance at the Democratic National Committee reception, according to a White House media pool report.

“We need you to write the biggest, fattest check that you can possibly write,” Obama told supporters, according to a transcript of her remarks provided by the White House.

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She spoke for about 20 minutes. Donations ranged from $500 to $20,000 per person, CBS 2’s Chris Martinez reports.

The first lady stopped at New Asian cuisine restaurant Sunda in River North before she attended a Beyoncé-Jay Z concert at Soldier Field with her two daughters, Sasha and Malia.

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They didn’t return to their Kenwood home until after midnight. They were expected to fly back to Washington on Friday.