Exhibit 23.2

Consent of Independent Registered Public Accounting Firm

We consent to the reference to our firm under the caption “Experts” in this Registration Statement (Form S-3) and related Prospectus of Ameristar Casinos, Inc. for the registration of 4,808,400 shares of its common stock and to the incorporation by reference therein of our reports dated March 16, 2011, with respect to the consolidated financial statements of Ameristar Casinos, Inc., and the effectiveness of internal control over financial reporting of Ameristar Casinos, Inc., included in its Annual Report (Form 10-K) for the year ended December 31, 2010, filed with the Securities and Exchange Commission.

/s/ Ernst & Young LLP          

Las Vegas, Nevada
May 11, 2011