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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION

                             WASHINGTON, D.C. 20549




                                    FORM 8-K


                                 CURRENT REPORT

     Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934


         Date of Report (Date of earliest event reported): May 23, 2003


                            NorthWestern Corporation
             (Exact name of registrant as specified in its charter)



           Delaware                     0-692                   46-0172280
(State or other jurisdiction       (Commission File           (IRS Employer
       of incorporation)               Number)              Identification No.)


             125 South Dakota Avenue                           57104
            Sioux Falls, South Dakota                        (Zip Code)
    (Address of principal executive offices)


                                 (605) 978-2908
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                             (Registrant's telephone
                          number, including area code)


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Item 5.    Other Events

On May 23, 2003, NorthWestern Corporation (the "Company") issued a press release
announcing  that the Company's  Board of Directors had elected to defer interest
payments on the  subordinated  debentures  of all series of its trust  preferred
securities. As a result, cash distributions on all series of the trust preferred
securities issued by the Company's affiliated trusts have been deferred.




Item 7.      Financial Statements and Exhibits

EXHIBIT NO.  DESCRIPTION OF DOCUMENT
- --------------------------------------------------------------------------------
99.1*        Press Release of NorthWestern Corporation dated May 23, 2003
* filed herewith


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                                   SIGNATURES

Pursuant  to the  requirements  of the  Securities  Exchange  Act of  1934,  the
registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned hereunto duly authorized.


                          NorthWestern Corporation


                          By:   /s/ Eric R. Jacobsen
                               ------------------------------------
                               Eric R. Jacobsen
                               Senior Vice President, General Counsel
                               and Chief Legal Officer

Date:  May 23, 2003


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                                Index to Exhibits
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EXHIBIT NO.  DESCRIPTION OF DOCUMENT
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99.1*        Press Release of NorthWestern Corporation dated May 23, 2003
* filed herewith


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