CHICAGO (CBS) — In between fund-raising appointments, President Obama on Friday cast his ballot for November’s election.

The president’s limo pulled up to the Cook County Administration building shortly after 2 p.m., shutting down Dearborn Street between Washington and Madison for about 30 minutes.

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The block was filled with Secret Service agents, who had to order people to move down the street as they quickly established a security perimeter.

Obama is in town all weekend for a variety of fund-raisers.

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He is staying overnight at his home in Kenwood.

After casting his ballot, he was asked by a reporter, “Who did you vote for?”

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He looked up with a big grin, but said nothing.