FORM N-PX
       ANNUAL REPORT OF PROXY VOTING RECORD OF REGISTERED MANAGEMENT
                            INVESTMENT COMPANY

Investment Company Act file number: 811-7590

John Hancock Patriot Preferred Dividend Fund
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  (Exact name of registrant as specified in charter)

601 Congress Street
Boston, Massachusetts 02210-2805
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  (Address of principal executive offices)

Noel Maffucci
601 Congress Street
Boston, Massachusetts 02210-2805
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  (Name and address of agent for service)


Registrant's telephone number, including area code: 1-800-225-5291

Date of Fiscal year-end: May 31

Date of reporting period: 07/01/2006 - 06/30/2007

Item 1. Proxy Voting Record


========================== PATRIOT PREFERRED DIVIDEND ==========================

ALLIANT ENERGY CORP.

Ticker:       LNT            Security ID:  018802108
Meeting Date: MAY 10, 2007   Meeting Type: Annual
Record Date:  MAR 20, 2007

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1.1   Elect Director James A. Leach             For       For        Management
1.2   Elect Director Michael L. Bennett         For       For        Management
1.3   Elect Director Darryl B. Hazel            For       For        Management
1.4   Elect Director David A. Perdue            For       For        Management
1.5   Elect Director Judith D. Pyle             For       Withhold   Management
2     Ratify Auditors                           For       For        Management


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AT&T INC

Ticker:       T              Security ID:  00206R102
Meeting Date: JUL 21, 2006   Meeting Type: Special
Record Date:  JUN 1, 2006

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1     Approve Merger Agreement                  For       For        Management


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AT&T INC

Ticker:       T              Security ID:  00206R102
Meeting Date: APR 27, 2007   Meeting Type: Annual
Record Date:  FEB 28, 2007

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1     Elect Director William F. Aldinger III    For       For        Management
2     Elect Director Gilbert F. Amelio          For       For        Management
3     Elect Director Reuben V. Anderson         For       For        Management
4     Elect Director James H. Blanchard         For       For        Management
5     Elect Director August A. Busch III        For       For        Management
6     Elect Director James P. Kelly             For       For        Management
7     Elect Director Charles F. Knight          For       For        Management
8     Elect Director Jon C. Madonna             For       For        Management
9     Elect Director Lynn M. Martin             For       For        Management
10    Elect Director John B. McCoy              For       For        Management
11    Elect Director Mary S. Metz               For       For        Management
12    Elect Director Toni Rembe                 For       For        Management
13    Elect Director Joyce M. Roche             For       For        Management
14    Elect Director Randall L. Stephenson      For       For        Management
15    Elect Director Laura D' Andrea Tyson      For       For        Management
16    Elect Director Patricia P. Upton          For       For        Management
17    Elect Director Edward E. Whitacre, Jr.    For       For        Management
18    Ratify Auditors                           For       For        Management
19    Compensation Specific-Severance Payments  For       For        Management
      to Executives
20    Report on Political Contributions         Against   Abstain    Shareholder
21    Amend Articles/Bylaws/Charter - Call      Against   For        Shareholder
      Special Meetings
22    Pay For Superior Performance              Against   Against    Shareholder
23    Advisory Vote to Ratify Named Executive   Against   For        Shareholder
      Officers' Compensation
24    Establish SERP Policy                     Against   Against    Shareholder


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DOMINION RESOURCES, INC.

Ticker:       D              Security ID:  25746U109
Meeting Date: APR 27, 2007   Meeting Type: Annual
Record Date:  FEB 23, 2007

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1.1   Elect Director Peter W. Brown             For       For        Management
1.2   Elect Director George A. Davidson, Jr.    For       For        Management
1.3   Elect Director Thomas F. Farrell, II      For       For        Management
1.4   Elect Director John W. Harris             For       For        Management
1.5   Elect Director Robert S. Jepson, Jr.      For       For        Management
1.6   Elect Director Mark J. Kington            For       For        Management
1.7   Elect Director Benjamin J. Lambert, III   For       For        Management
1.8   Elect Director Margaret A. McKenna        For       For        Management
1.9   Elect Director Frank S. Royal, M.D.       For       For        Management
1.10  Elect Director David A. Wollard           For       For        Management
2     Ratify Auditors                           For       For        Management
3     Report on Greenhouse Gas Emissions        Against   Abstain    Shareholder
4     Report on Impact of Utilizing National    Against   Abstain    Shareholder
      Interest Electric Transmission Corridor


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DTE ENERGY CO.

Ticker:       DTE            Security ID:  233331107
Meeting Date: MAY 3, 2007    Meeting Type: Annual
Record Date:  MAR 9, 2007

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1.1   Elect Director Anthony F. Earley, Jr.     For       For        Management
1.2   Elect Director Allan D. Gilmour           For       For        Management
1.3   Elect Director Frank M. Hennessey         For       For        Management
1.4   Elect Director Gail J. McGovern           For       For        Management
1.5   Elect Director James H. Vandenberghe      For       For        Management
2     Ratify Auditors                           For       For        Management


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INTEGRYS ENERGY GROUP INC

Ticker:       TEG            Security ID:  45822P105
Meeting Date: MAY 17, 2007   Meeting Type: Annual
Record Date:  MAR 22, 2007

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1.1   Elect Director Pastora San Juan Cafferty  For       For        Management
1.2   Elect Director Ellen Carnahan             For       For        Management
1.3   Elect Director Michael E. Lavin           For       For        Management
1.4   Elect Director William F. Protz, Jr.      For       For        Management
1.5   Elect Director Larry L. Weyers            For       For        Management
2     Approve Omnibus Stock Plan                For       Against    Management
3     Amend Deferred Compensation Plan          For       For        Management
4     Ratify Auditors                           For       For        Management


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KEYSPAN CORPORATION

Ticker:       KSE            Security ID:  49337W100
Meeting Date: AUG 17, 2006   Meeting Type: Annual
Record Date:  JUL 3, 2006

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1     Approve Merger Agreement                  For       For        Management
2.1   Elect Director Robert B. Catell           For       For        Management
2.2   Elect Director Andrea S. Christensen      For       For        Management
2.3   Elect Director Robert J. Fani             For       For        Management
2.4   Elect Director Alan H. Fishman            For       For        Management
2.5   Elect Director James R. Jones             For       For        Management
2.6   Elect Director James L. Larocca           For       For        Management
2.7   Elect Director Gloria C. Larson           For       For        Management
2.8   Elect Director Stephen W. Mckessy         For       For        Management
2.9   Elect Director Edward D. Miller           For       For        Management
2.10  Elect Director Vikki L. Pryor             For       For        Management
3     Ratify Auditors                           For       For        Management
4     Adopt Simple Majority Vote Requirement    Against   For        Shareholder


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NISOURCE INC.

Ticker:       NI             Security ID:  65473P105
Meeting Date: MAY 8, 2007    Meeting Type: Annual
Record Date:  MAR 13, 2007

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1     Elect Director Steven C. Beering          For       For        Management
2     Elect Director Dennis E. Foster           For       For        Management
3     Elect Director Marty K. Kittrell          For       For        Management
4     Elect Director Peter McCausland           For       For        Management
5     Elect Director Steven R. McCracken        For       For        Management
6     Elect Director W. Lee Nutter              For       For        Management
7     Elect Director Ian M. Rolland             For       For        Management
8     Elect Director Robert C. Skaggs, Jr       For       For        Management
9     Elect Director Richard L. Thompson        For       For        Management
10    Elect Director Carolyn Y. Woo             For       For        Management
11    Elect Director Roger A. Young             For       For        Management
12    Ratify Auditors                           For       For        Management


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NSTAR

Ticker:       NST            Security ID:  67019E107
Meeting Date: MAY 3, 2007    Meeting Type: Annual
Record Date:  MAR 6, 2007

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1.1   Elect Director Gary L. Countryman         For       For        Management
1.2   Elect Director Daniel Dennis              For       For        Management
1.3   Elect Director Thomas J. May              For       For        Management
2     Approve Omnibus Stock Plan                For       For        Management
3     Ratify Auditors                           For       For        Management


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PEOPLES ENERGY CORP.

Ticker:       PGL            Security ID:  711030106
Meeting Date: DEC 6, 2006    Meeting Type: Special
Record Date:  OCT 16, 2006

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1     Approve Merger Agreement                  For       For        Management
2     Adjourn Meeting                           For       For        Management


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SCANA CORPORATION

Ticker:       SCG            Security ID:  80589M102
Meeting Date: APR 26, 2007   Meeting Type: Annual
Record Date:  MAR 9, 2007

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1.1   Elect Director W. Hayne Hipp              For       For        Management
1.2   Elect Director Harold C. Stowe            For       For        Management
1.3   Elect Director G. Smedes York             For       For        Management
2     Ratify Auditors                           For       For        Management


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TECO ENERGY, INC.

Ticker:       TE             Security ID:  872375100
Meeting Date: MAY 2, 2007    Meeting Type: Annual
Record Date:  FEB 23, 2007

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1.1   Elect Director Joseph P. Lacher           For       For        Management
1.2   Elect Director Tom L. Rankin              For       For        Management
1.3   Elect Director William D. Rockford        For       For        Management
1.4   Elect Director J. Thomas Touchton         For       For        Management
2     Ratify Auditors                           For       For        Management


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XCEL ENERGY INC.

Ticker:       XEL            Security ID:  98389B100
Meeting Date: MAY 23, 2007   Meeting Type: Annual
Record Date:  MAR 29, 2007

#     Proposal                                  Mgt Rec   Vote Cast  Sponsor
1.1   Elect Director C. Coney Burgess           For       For        Management
1.2   Elect Director Fredric W. Corrigan        For       For        Management
1.3   Elect Director Richard K. Davis           For       Withhold   Management
1.4   Elect Director Roger R. Hemminghaus       For       For        Management
1.5   Elect Director A. Barry Hirschfeld        For       For        Management
1.6   Elect Director Richard C. Kelly           For       For        Management
1.7   Elect Director Douglas W. Leatherdale     For       For        Management
1.8   Elect Director Albert F. Moreno           For       For        Management
1.9   Elect Director Margaret R. Preska         For       For        Management
1.10  Elect Director A. Patricia Sampson        For       For        Management
1.11  Elect Director Richard H. Truly           For       For        Management
1.12  Elect Director David A. Westerlund        For       For        Management
1.13  Elect Director Timothy V. Wolf            For       For        Management
2     Ratify Auditors                           For       For        Management
3     Separate Chairman and CEO Positions       Against   Against    Shareholder
4     Pay For Superior Performance              Against   Against    Shareholder



Any ballot marked  'Abstain' is considered  to have been voted.  Ballots  marked
'Abstain'  are   considered   to  be  have  been  voted   against   management's
recommendation,  regardless of whether the recommendation is 'For' or 'Against,'
except where  management  has made no  recommendation  or has  recommended  that
shareholders 'Abstain.'

Where  management has recommended that  shareholders  'Abstain' from voting on a
ballot item: 1) a ballot  market  'Abstain' is considered to have been voted for
management's  recommendation  to  'Abstain'  and  2) a  ballot  voted  'For"  or
'Against' is considered to have been voted against  management's  recommendation
to 'Abstain.'

Where management has made no  recommendation  on a ballot item, the abbreviation
"N/A" is used to denote that there is no applicable  recommendation  compared to
which a vote may be 'For' or 'Against' the recommendation of management.

SIGNATURES:
Pursuant  to the  requirements  of the  Investment  Company  Act  of  1940,  the
registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned, thereunto duly authorized.

John Hancock Patriot Preferred Dividend Fund
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       (Registrant)

By:    /s/Keith F. Hartstein
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       Keith F. Hartstein
       President and Chief Executive Officer

Date:  August 27, 2007