GSD&M Idea City has added creative chores for Harrah's Caesars and Horseshoe brands following a review.
The scope of work for the Omnicom Group shop in Austin, Texas, includes online, print, broadcast, OOH and experiential marketing.
The combined brands spent slightly less than $5.5 million in measured media during the first three-quarters of 2009, after spending more than $25 million on ads in all of the previous year, per Nielsen.
Caesars recently worked with Leo Burnett, while Horseshoe had teamed with RPM.
A GSD&M rep said spending moving forward could exceed the 2008 outlay.
Media is currently handled by Publicis Groupe's Zenith Media in New York; that assignment is not shifting.
GSD&M has had an up-down year on the new-business front, scoring Ace Hardware's $40 million assignment and global creative work from BMW, though it lost the automaker's $200 million U.S. media business.