

                                                              EXHIBIT (a)-(4)

                          ACXIOM/MAY & SPEH, INC.

                         Offer to Purchase for Cash
                           All of its Outstanding
               5 1/4% Convertible Subordinated Notes due 2003
                              (CUSIP 57777AAA)

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SUBJECT TO THE TERMS AND CONDITIONS SET FORTH IN THE OFFER TO PURCHASE, THE
OFFER WILL EXPIRE AT 5:00 P.M., NEW YORK CITY TIME, ON NOVEMBER 20, 1998,
UNLESS EXTENDED (SUCH DATE, AS THE SAME MAY BE EXTENDED, THE "EXPIRATION
DATE"). TENDERS OF NOTES MAY BE WITHDRAWN AT ANY TIME PRIOR TO THE
EXPIRATION DATE.
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                                                          October 23, 1998

To Our Clients:

        Enclosed for your consideration is an Offer to Purchase, dated
October 23, 1998 (as the same may be amended from time to time, the "Offer
to Purchase", and a form of letter of transmittal and instructions thereto
(the "Letter of Transmittal"), relating to the offer (the "Offer") by
Acxiom/May & Speh, Inc. ("May & Speh") to purchase for cash all of its
outstanding 5 1/4% Convertible Subordinated Notes due 2003 (the "Notes") at
100% of the principal amount thereof, plus accrued interest thereon to but
excluding the date of repurchase.

        The materials are being forwarded to you as the beneficial owner of
Notes carried by us for your account or benefit but not registered in your
name. A tender of any Notes may only be made by us as the registered Holder
and pursuant to your instructions. Therefore, beneficial owners of Notes
registered in the name of a broker, dealer, commercial bank, trust company
or any other nominee are urged to contact such registered Holder promptly
if they wish to tender Notes in the Offer.

        Accordingly, we request instructions as to whether you wish us to
tender any or all such Notes held by us for your account or benefit
pursuant to the terms and conditions set forth in the Offer to Purchase and
the Letter of Transmittal. We urge you to read carefully the Offer to
Purchase and Letter of Transmittal before instructing us to tender your
Notes.

        Your instructions to us should be forwarded as promptly as possible
in order to permit us to tender Notes on your behalf in accordance with the
provisions of the Offer. Notes tendered pursuant to the Offer may be
validly withdrawn, subject to the procedures described in the Offer to
Purchase, at any time prior to the Expiration Date.

        Your attention is directed to the following:

               1.     The Offer is for all outstanding Notes.

               2.     The offer and withdrawal rights will expire on the
                      Expiration Date.

               3.     Any transfer taxes incident to the transfer of Notes
                      from the tendering Holder to May & Speh will be paid
                      by May & Speh, except as provided in the Offer to
                      Purchase and the instructions to the Letter of
                      Transmittal.

        If you wish to have us tender any or all of your Notes held by us
for your account or benefit, please so instruct us by completing, executing
and returning to us the instruction form that appears below. If you
authorize the tender of your Notes, all such Notes will be tendered unless
otherwise specified below. The accompanying letter of transmittal is
furnished to you for informational purposes only and may not be used by you
to tender Notes held by us and registered in our name for your account or
benefit.


                                INSTRUCTIONS

               The undersigned acknowledge(s) receipt of your letter and
the enclosed material referred to therein relating to the Offer.

               This will instruct you to tender the principal amount of
Notes indicated below held by you for the account or benefit of the
undersigned pursuant to the terms of and conditions set forth in the Offer
to Purchase and the Letter of Transmittal.

|_|   -    Please tender ALL my Notes held by you for my account or benefit.

|_|   -    Please tender LESS than all my Notes.  I wish to tender $
           principal amount of Notes.

|_|   -    Please do not tender any Notes held by you for my account or
           benefit.


Date:                     , 1998

                                            ______________________________
                                            ______________________________
                                            Signatures(s)

                                            ______________________________
                                            ______________________________
                                            Please print name(s) here

               UNLESS A SPECIFIC CONTRARY INSTRUCTION IS GIVEN, YOUR
SIGNATURE(S) HEREON SHALL CONSTITUTE AN INSTRUCTION TO US TO TENDER ALL OF
YOUR NOTES.



