Trusted by leaders. Driven by insights.
Every survey, model, and message test is designed for the unique challenge in front of it.
The firm’s namesake is Brock’s daughter, Harper.
Harper Polling is a nationally respected market research firm delivering bespoke, high-touch polling and strategic insights. We specialize in research that explores and explains public opinion for decision-makers across many industries.
Founded with the vision of applying cutting-edge methodologies to improve the quality and cost-effectiveness of modern survey research. Every aspect of research is performed by the firm’s senior leadership — the product of our conscientious nature and the high level of engagement and responsibility we bring to clients and projects.
Harper Polling has enjoyed substantial growth and a winning track record since its founding in 2012, conducting hundreds of surveys in over 40 states and nationally. Our data and strategic insight has helped elect Members of Congress, grown company sales, and guided successful advocacy and marketing campaigns across the country.
Harper Polling was acquired by market research firm Cygnal in 2020. After three successful election cycles with Cygnal, Harper Polling is returning to its roots as an independent firm with a singular focus: delivering high-quality, custom research with the full attention of senior leadership on every project.
At Harper Polling, all research is crafted and managed by our top strategists. We don’t believe in a one-size-fits-all model. Every survey, model, and message test is designed to meet the unique challenges of our clients and provide clarity in a crowded landscape.
Senior leadership on every project.
Brock McCleary
Brock McCleary is a nationally recognized pollster and strategist and the owner of Harper Polling. Prior to founding the firm, Brock served as Polling Director and Deputy Political Director for the National Republican Congressional Committee (NRCC) as Republicans won historic majorities in the U.S. House of From the back streets of Philadelphia and New Jersey campaigns to K Street, Capitol Hill and Presidential politics, Brock McCleary’s experience and expertise are distinct as a strategic pollster.
Brock serves as a pollster and advisor to Members of Congress, trade associations, independent expenditure organizations, and nonpartisan public policy groups. In 2020, Brock served as Pollster to President Donald J. Trump’s reelection, and Vivek Ramaswamy’s campaign for President in 2024.
His clients include America’s Credit Unions, Shell, Visa, Pennsylvania Partnerships for Children, National Association of Wholesaler-Distributors, National Shooting Sports Foundation, Pennsylvania Cannabis Coalition, The John Locke Foundation, Financial Services Roundtable, National Association of Physical Therapists, and Sports Betting Alliance.
Brock previously held positions as Deputy Political Director, Polling Director, and Senior Advisor at the National Republican Congressional Committee (NRCC). During his tenure as a House Republican strategist, Republicans gained 63 seats in the House of Representatives in 2010 and secured the two largest majorities since World War II in 2012. In the 2014 and 2016 elections, House Republicans maintained control of Congress while Brock served as Senior Advisor to the NRCC.
In 2013, Brock left Washington, D.C. and returned home to Pennsylvania where he founded Harper Polling. As its President, Brock built Harper into a nationally recognized polling firm with a list of distinguished political and public affairs clients. In 2020, Harper Polling was acquired by Cygnal, and he joined the company as a senior partner. Brock relaunched Harper Polling in the Spring of 2025.
In 2020, Brock joined the reelection of President Trump at Labor Day and conducted 62 battleground state polls providing insights and analysis that helped fuel the campaign's Fall resurgence and bolster Republican wins down ballot.
Brock got an early start in politics as a 12-year-old volunteer on Missouri Democratic Senator Richard Gephardt’s campaign for President in 1988. The Gephardt’s campaign operated phone banks out of his mother and stepfather’s home in Harrisburg. A Kennedy disciple until the Republican revolution of 1994, Brock was elected Chairman of the Pennsylvania College Republicans in 1996.
Brock served as the Deputy Coalitions Director for Pennsylvania Governor Tom Ridge’s reelection campaign, Political Director of the New Jersey Republican Party, and a political consultant to congressional and state legislative races in Pennsylvania and New Jersey, before heading to Washington as the Communications Director for Congressman and former Speaker Pro Tempore of the U.S. House, Patrick McHenry of North Carolina. In 2010, he was presented with the “Rising Star” Award by Campaigns & Elections. Brock is a RIVA-trained focus group moderator.
“Chairman Pete Session’s NRCC, led by Executive Director Guy Harrison, Communications Director Paul Lindsay, Political Director Mike Shields, and Polling Director Brock McCleary, correctly calculated early on in the cycle that offense was the best defense. Their early attacks to encourage Democratic retirements helped create a GOP open-seat advantage and eventually forced Democrats to spend millions of dollars defending seats in places like Connecticut, Rhode Island and southern Illinois.”-Famed Political Handicapper Charlie Cook
“A Q&A with polling guru Brock McCleary”- City & State PA
“House Republican survey maven Brock McCleary”- Time MagazineRepresentatives in 2010 and 2012. In 2014 and 2016, he served as Senior Advisor to the NRCC for political landscape evaluation and resource allocation. A veteran of campaigns from Philadelphia to the Presidency, Brock is a RIVA-trained focus group moderator. The firm’s namesake is his daughter, Harper.
Mike Yelovich
Mike Yelovich is Managing Director of Harper Polling and a trusted political and nonprofit strategist with more than a decade of experience in data strategy, public affairs, and advocacy. He has worked with hundreds of campaigns, nonprofit organizations, corporations, and issue advocacy efforts across the country, helping clients turn complex data into clear strategy and informed decision-making.
He brings extensive market research experience to the firm, having previously served as Polling Director at Cygnal and as Research Director at WPA Intelligence, another top-tier Republican polling and data firm in Washington, D.C. Yelovich has led data teams responsible for providing insights and data strategy for some of the most closely watched races in the country, including Governor Glenn Youngkin’s winning campaign in Virginia.
Mike began his polling and market research career at the Marist Institute for Public Opinion and has since built a reputation for excellence in survey design, methodology, and voter modeling. In addition to his research background, he brings extensive experience in operational strategy and organizational development, having worked with nonprofit organizations of all sizes, including both 501(c)(3) and 501(c)(4) entities, political action committees, and media operations. He has experience helping organizations build operational capacity, manage communications programs, and execute advocacy and public affairs initiatives.
Mike is a graduate of Marist College with a degree in Political Science and Business Administration. After spending the last decade in Washington D.C, Mike now lives in DuPage County, Illinois where he is focusing on electing common sense conservative candidates.
Robert Frey
Rob Frey is a Senior Research Associate with extensive experience in market research and political analytics. Originally from New Jersey, he started his career in local politics and interned at Harper Polling during the summer of 2017. He began working with Majority Strategies during the 2018 cycle, contributed to the Republican National Committee’s Data team in 2020, and spent four and a half years at Public Opinion Strategies as a Senior Research Analyst, working on projects for NBC News, CNBC, trade associations, and public policy campaigns.
He holds a Bachelor’s degree in Political Science and Public Policy from Gettysburg College and a Master’s in Political Management from The George Washington University. Rob now resides in Alexandria, Virginia. Outside of work, he is an avid history enthusiast and enjoys traveling to Revolutionary and Civil War sites.
Gabriella Gabel
Gabriella Gabel is a Research Associate at Harper Polling. Originally from New Jersey, she graduated from Syracuse University's Maxwell School of Citizenship and Public Affairs with a B.A. in Political Science and a concentration in American Politics.
Prior to joining Harper Polling, Gabriella served as a Government Affairs Intern at Porter Wright Morris & Arthur LLP in Washington, D.C., where she conducted legislative research and tracked federal policy developments. She also led the Higher Education campaign for the New York Public Interest Research Group (NYPIRG), organizing advocacy initiatives and engaging students on higher education issues.
She is interested in the intersection of public opinion, policy, and political strategy.
Join the team
Interested in joining the Harper Polling team? We’re always looking for professionals who are passionate about data, strategy, and shaping the future. Not seeing a position for you? Send your resume to contact@harperpolling.com for consideration for future opportunities.