### **EXHIBIT31.1**

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 such disclosure controls andprocedures to ensure that material information relating to the registrants,including their consolidated subsidiaries, is made known to us by others withinthose entities, particularly during the period in which this annual report isbeing prepared;

b.                                      evaluated the effectiveness of theregistrants’ disclosure controls and procedures and presented in this reportour conclusions about the effectiveness of the disclosure controls andprocedures, as of the end of the period covered by this report based on suchevaluation; and

c.                                       disclosed in this annual report anychange in the registrants’ internal control over financial reporting thatoccurred during the registrants’ most recent fiscal quarter (the registrants’fourth fiscal quarter in the case of this annual report) that has materiallyaffected, or is reasonably likely to affect, the registrants’ internal controlover 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 significant deficiencies and materialweaknesses in the design or operation of internal control over financialreporting which are reasonably likely to adversely affect the registrants’ability to record, process, summarize and report financial information; and

b.                                      any fraud, whether or not material, thatinvolves management or other employees who have a significant role in theregistrants’ internal control over financial reporting.
| Date: April 2, 2007 |   | /s/ M. Brent  Stevens   |   |
|--------------------------|--------|-------------------------|--------|
|                     |   | M. Brent Stevens        |
|                     |   | Chief Executive Officer |

 

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