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Investigative Research Specialists


Investigative Research Specialists

Opposition Research Handbook

Investigative Research Specialists, LLC has released the fourth edition of The Opposition Research Handbook. The author Larry Zilliox is a retired Virginia private investigator with over 25 years' experience conducting opposition research.

This one-of-a-kind book takes the researcher through compiling information about political candidates, both the opponent and your own. It offers more than 150 pages of techniques and resources, checklists for gathering information, and security considerations. The fourth edition provides links to over 300 of the latest investigative and political Internet resources.

For Kindle users the book is now available on Amazon. Click here to get your copy The Opposition Research Handbook

Mr. Zilliox is the president of Investigative Research Specialists, LLC a Service-Disabled Veteran-Owned Small Business located in Bristow, Virginia. He has written for PI Magazine, is a board member of the Virginia Professional Investigators PAC, and former board member of the Professional Investigators and Security Association.

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