"the keepers of the best list possible in Michigan" - The New York Times
Practical Political Data is Michigan’s longest operational political consulting and data vendor, founded by Mark Grebner in Michigan.
“The Grebner List” as it is commonly known, has played a major role in electing candidates running for nearly every office across Michigan. Over five decades, our success stories are in the thousands, with clients past and present walking the halls of our state Capitol, serving as mayors and county commissioners, school board members, and even sitting behind the Resolute desk in the White House.
But great voter lists isn’t all we’ve become known for as Michigan’s oldest, most established political consulting firm. As a full-service firm, we are able to fulfill nearly any need of the serious candidate, campaign, or organization to run an effective, successful operation. Further, we are proud of the many partnerships we’ve built across Michigan that allow our clients the ability to tap in to a vast network of specialists and practitioners, only available to PPD clients.
In 2025, we launched VoteCast, our voter management CRM that’s been battle-tested by over 1,200 Michigan campaigns nationally alongside our national data partners, L2. Learn more at www.VoteCastHQ.com
East Lansing, MI
USA, 48823
