Exhibit 23.2

Consent of Independent Registered Public Accounting Firm

We consent to the incorporation by reference in the Registration Statement (Form S-8) pertaining to the Amended and Restated 1999 Stock Incentive Plan of Ameristar Casinos, Inc. of our reports dated February 28, 2008, with respect to the consolidated financial statements of Ameristar Casinos, Inc., included in its Annual Report on Form 10-K for the year ended December 31, 2007 and the effectiveness of internal control over financial reporting of Ameristar Casinos, Inc. filed with the Securities and Exchange Commission.

/s/ Ernst & Young LLP  

Las Vegas, Nevada
February 29, 2008