Vocus 10-Q 2008 Q1 Quarterly report

Exhibit 32.1

CERTIFICATIONS OF
CHIEF EXECUTIVE OFFICER AND CHIEF FINANCIAL OFFICER
PURSUANT TO 18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

     In connection with the Quarterly Report on Form 10-Q of Vocus, Inc. (the “Company “) for the quarter ended March 31, 2008 as filed with the Securities and Exchange Commission on the date hereof (the “Report “), Richard Rudman, Chief Executive Officer, President and Chairman of the Company and Stephen Vintz, Chief Financial Officer, Treasurer and Secretary of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that to our best knowledge:

          1. The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

          2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

By:	/s/ Richard Rudman
	Richard Rudman
	Chief Executive Officer, President and Chairman
By:	/s/ Stephen Vintz
	Stephen Vintz
	Chief Financial Officer, Treasurer and Secretary

Date: May 12, 2008