Exhibit 3.1

AMENDED AND RESTATED

CERTIFICATE OF INCORPORATION

HARRIS INTERACTIVE INC.

Article I. The name of the corporation (the “Corporation”) is Harris Interactive Inc.

Article II. The address of the registered office in the State of Delaware is: Corporation Trust Center, 1209 Orange Street, Wilmington, New Castle County, Delaware 19801. The name of its registered agent at such address is: The Corporation Trust Company.

Article III. The purpose of the Corporation is to engage in any lawful act or activity for which corporations may be organized under the General Corporation Law of the State of Delaware.

Article IV. The total number of shares of all classes of stock that the Corporation shall have authority to issue is 1,000 shares of Common Stock having the par value of $0.01 per share.

Article V. The number of directors of the Corporation shall be fixed from time to time by the Board of Directors of the Corporation.

Article VI. In furtherance and not in limitation of the powers conferred upon it by law, the Board of Directors of the Corporation is expressly authorized to adopt, amend or repeal the Bylaws of the Corporation.

Article VII. Unless and except to the extent that the Bylaws of the Corporation so require, the election of directors of the Corporation need not be by written ballot.

Article VIII. The Corporation shall indemnify each of the Corporation’s directors and officers in each and every situation where, under Section 145 of the General Corporation Law of the State of Delaware, as amended from time to time (“Section 145”), the Corporation is permitted or empowered to make such indemnification. The Corporation may, in the sole discretion of the Board of Directors of the Corporation, indemnify any other person who may be indemnified pursuant to Section 145 to the extent the Board of Directors deems advisable, as permitted by Section 145. The Corporation shall promptly make or cause to be made any determination required to be made pursuant to Section 145.

No person shall be personally liable to the Corporation or its stockholders for monetary damages for breach of fiduciary duty as a director, provided, however, that the foregoing shall not eliminate or limit the liability of a director (i) for any breach of the director’s duty of loyalty to the Corporation or its stockholders, (ii) for acts or omissions not in good faith or which involve intentional misconduct or a knowing violation of law, (iii) under Section 174 of the General Corporation Law of the State of Delaware or (iv) for any transaction from which the director derived an improper personal benefit. If the General Corporation Law of the State of Delaware is subsequently amended to further eliminate or limit the liability of a director, then a

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director of the corporation, in addition to the circumstances in which a director is not personally liable as set forth in the preceding sentence, shall not be liable to the fullest extent permitted by the amended General Corporation Law of the State of Delaware. For purposes of this Article VIII, “fiduciary duty as a director” shall include any fiduciary duty arising out of serving at the Corporation’s request as a director of another corporation, partnership, joint venture or other enterprise, and “personal liability to the corporation or its stockholders” shall include any liability to such other corporation, partnership, joint venture, trust or other enterprise, and any liability to the corporation in its capacity as a security holder, joint venture, partner, beneficiary, creditor or investor of or in any such other corporation, partnership, joint venture, trust or other enterprise.

Neither any amendment nor repeal of this Article VIII nor the adoption of any provision of this Certificate of Incorporation inconsistent with this Article VIII, shall eliminate or reduce the effect of this Article VIII in respect of any matter occurring, or any cause of action, suit or claim that, but for this Article VIII, would accrue or arise, prior to such amendment, repeal or adoption of an inconsistent provision.

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