07/09/1858Senator Douglas launched his election campaign with a speech in Chicago. Source Citation: David Zarefsky, Lincoln, Douglas, and Slavery: In the Crucible of Public Debate (Chicago: The University of Chicago Press, 1990), 47. TabsRecord DataDate Certainty: ExactType: Campaigns/ElectionsRelevance: Personal Major TopicsLincoln-Douglas Debates People Douglas, Stephen Arnold Lincoln, Abraham PlacesTremont House, Chicago, IL Documents Date Title 07/09/1858 Recollection by Clarke E. Carr, Stephen A. Douglas, July 9, 1858 07/13/1858 New York Times, "Senator Douglas at Chicago," July 13, 1858 07/19/1858 (St. Louis) Missouri Republican, "The Progress of Judge Douglas Through Illinois," July 19, 1858 07/19/1858 Lyman Trumbull to Abraham Lincoln, July 19, 1858 07/21/1858 Bangor (ME) Whig and Courier, "Speech of Mr. Lincoln," July 21, 1858 08/18/1858 New York Times, “Democratic Prospects In Illinois,” August 18, 1858 08/19/1858 New York Times, "Hot Work in Illinois," August 19, 1858