"You know Chicago, the city where four out of every two people votes democratic" was one funny line used by Alfred E. Smith IV to introduce Barack Obama, who has made Chicago his home since 1993. The humor on this occasion is exceptional. Both presidential candidates were present at the Waldorf Astoria Hotel in New York City at a charity event honoring Alfred E. Smith on October 16, 2008. Smith was the first Catholic to run for President of the United States in 1924 and 1928.
You may also be interested in watching the third presidential debate from October 15, 2008. The New York Times presents the entire debate, along with a transcript.