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                                                                 Exhibit 99.Cert

                        MANAGED SECTORS VARIABLE ACCOUNT

         CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT


     I, Richard M. Hisey, certify that:

     1.   I have reviewed this report on Form N-CSR of Managed Sectors Variable
          Account;

     2.  Based on my knowledge, this report does not contain any untrue
         statement of a material fact or omit to state a material fact necessary
         to make the statements made, in light of the circumstances under which
         such statements were made, not misleading with respect to the period
         covered by this report;

     3.  Based on my knowledge, the financial statements, and other financial
         information included in this report, fairly present in all material
         respects the financial condition, results of operations, changes in net
         assets, and cash flows (if the financial statements are required to
         include a statement of cash flows) of the registrant as of, and for,
         the periods presented in this report;

     4.  The registrant's other certifying officers and I are responsible for
         establishing and maintaining disclosure controls and procedures (as
         defined in Rule 30a-3(c) under the Investment Company Act of 1940) for
         the registrant and have:

            a.   designed such disclosure controls and procedures, or caused
                 such disclosure controls and procedures to be designed under
                 our supervision, to ensure that material information relating
                 to the registrant, including its consolidated subsidiaries, is
                 made known to us by others within those entities, particularly
                 during the period in which this report is being prepared;

            b.   evaluated the effectiveness of the registrant's disclosure
                 controls and procedures and presented in this report our
                 conclusions about the effectiveness of the disclosure controls
                 and procedures as of a date within 90 days prior to the filing
                 date of this report based on such evaluation; and

            c.   disclosed in this report any change in the registrant's
                 internal control over financial reporting that occurred during
                 the registrant's most recent fiscal half-year (the registrant's
                 second fiscal half-year in the case of an annual report) that
                 has materially affected, or is reasonably likely to materially
                 affect, the registrant's internal control over financial
                 reporting; and

     5.  The registrant's other certifying officers and I have disclosed to the
         registrant's auditors and the audit committee of the registrant's board
         of directors (or persons performing the equivalent functions):

            a.   all significant deficiencies and material weaknesses in the
                 design or operation of internal control over financial
                 reporting which are reasonably likely to adversely affect the
                 registrant's ability to record, process, summarize, and report
                 financial information; and

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            b.   any fraud, whether or not material, that involves management or
                 other employees who have a significant role in the registrant's
                 internal control over financial reporting.


Date: August 23, 2004                    RICHARD M. HISEY
      ---------------                    -----------------------------------
                                         Richard M. Hisey
                                         Treasurer (Principal Financial Officer
                                         and Accounting Officer)

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                        MANAGED SECTORS VARIABLE ACCOUNT

         CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT


     I, Robert J. Manning, certify that:

     1.  I have reviewed this report on Form N-CSR of Managed Sectors Variable
         Account;

     2.  Based on my knowledge, this report does not contain any untrue
         statement of a material fact or omit to state a material fact necessary
         to make the statements made, in light of the circumstances under which
         such statements were made, not misleading with respect to the period
         covered by this report;

     3.  Based on my knowledge, the financial statements, and other financial
         information included in this report, fairly present in all material
         respects the financial condition, results of operations, changes in net
         assets, and cash flows (if the financial statements are required to
         include a statement of cash flows) of the registrant as of, and for,
         the periods presented in this report;

     4.  The registrant's other certifying officers and I are responsible for
         establishing and maintaining disclosure controls and procedures (as
         defined in Rule 30a-3(c) under the Investment Company Act of 1940) for
         the registrant and have:

           a.   designed such disclosure controls and procedures, or caused such
                disclosure controls and procedures to be designed under our
                supervision, to ensure that material information relating to the
                registrant, including its consolidated subsidiaries, is made
                known to us by others within those entities, particularly during
                the period in which this report is being prepared;

            b.  evaluated the effectiveness of the registrant's disclosure
                controls and procedures and presented in this report our
                conclusions about the effectiveness of the disclosure controls
                and procedures as of a date within 90 days prior to the filing
                date of this report based on such evaluation; and

            c.  disclosed in this report any change in the registrant's internal
                control over financial reporting that occurred during the
                registrant's most recent fiscal half-year (the registrant's
                second fiscal half-year in the case of an annual report) that
                has materially affected, or is reasonably likely to materially
                affect, the registrant's internal control over financial
                reporting; and

     5.  The registrant's other certifying officers and I have disclosed to the
         registrant's auditors and the audit committee of the registrant's board
         of directors (or persons performing the equivalent functions):

            a.   all significant deficiencies and material weaknesses in the
                 design or operation of internal control over financial
                 reporting which are reasonably likely to adversely affect the
                 registrant's ability to record, process, summarize, and report
                 financial information; and

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            b.   any fraud, whether or not material, that involves management or
                 other employees who have a significant role in the registrant's
                 internal control over financial reporting.


Date: August 23, 2004                    ROBERT J. MANNING
      ---------------                    ---------------------------------------
                                         Robert J. Manning
                                         President (Principal Executive Officer)