Brock McCleary, Owner
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 Magazine