### **EXHIBIT 31.1**

### ** **

CERTIFICATION

 

I, M. Brent Stevens, certify that:

 

1.                                       Ihave reviewed this annual report on Form 10-K of Peninsula Gaming, LLC,Peninsula Gaming Corp. and Diamond Jo, LLC;

 

2.                                       Basedon my knowledge, this annual report does not contain any untrue statement of amaterial fact or omit to state a material fact necessary to make the statementsmade, in light of the circumstances under which such statements were made, notmisleading with respect to the period covered by this annual report;

 

3.                                       Basedon my knowledge, the financial statements, and other financial informationincluded in this annual report, fairly present in all material respects thefinancial condition, results of operations and cash flows of the registrants asof, and for, the periods presented in this annual report;

 

4.                                       Theregistrants’ other certifying officer and I are responsible for establishingand maintaining disclosure controls and procedures (as defined in Exchange ActRules 13a-15(e) and 15d-15(e)) for the registrants and we have:

 

a.                                       designed suchdisclosure controls and procedures to ensure that material information relatingto the registrants, including their consolidated subsidiaries, is made known tous by others within those entities, particularly during the period in whichthis annual report is being prepared;

 

b.                                      evaluated theeffectiveness of the registrants’ disclosure controls and procedures andpresented in this report our conclusions about the effectiveness of thedisclosure controls and procedures, as of the end of the period covered by thisreport based on such evaluation; and

 

c.                                       disclosed inthis annual report any change in the registrants’ internal control overfinancial reporting that occurred during the registrants’ most recent fiscalquarter (the registrants’ fourth fiscal quarter in the case of this annualreport) that has materially affected, or is reasonably likely to affect, theregistrants’ internal control over financial reporting; and

 

5.                                       Theregistrants’ other certifying officer and I have disclosed, based on our mostrecent evaluation, to the registrants’ auditors and the audit committee ofregistrants’ board of directors (or persons performing the equivalentfunction):

 

a.                                       all significantdeficiencies and material weaknesses in the design or operation of internalcontrol over financial reporting which are reasonably likely to adverselyaffect the registrants’ ability to record, process, summarize and reportfinancial information; and

 

b.                                      any fraud,whether or not material, that involves management or other employees who have asignificant role in the registrants’ internal control over financial reporting.

 

 
| Date: March 31, 2006 | s/ M. Brent Stevens     |   |
|---------------------------|-------------------------|--------|
|                      | M. Brent Stevens        |
|                      | Chief Executive Officer |

 

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