6-10 years

I have been recognized by the Nashville Post list of In-Charge: Government & Politics for 2019, 2020, 2021, and 2022

Our firm was recognized nationally by the Public Relations Society of America for our comprehensive public affairs campaign to bring Major League Soccer to Nashville

Mark Cate is the Founder and President of Stones River Group, a Nashville-based public affairs firm serving both Tennessee, regional and national clients. He formerly served as Tennessee Governor Bill Haslam's chief of staff, where he was his top advisor, strategist and negotiator.

During his tenure with the Haslam Administration, Mark led several legislative policy initiatives, including K-12 education reform, workers' compensation reform, civil service reform, an alternative approach to Medicaid expansion, and postsecondary education reform, including the nationally-acclaimed Tennessee Promise program.

Prior to serving in state government, Mark successfully managed Governor Haslam's first gubernatorial campaign in 2010, which led to a record-setting general election victory. He previously worked as an executive in real estate management and development and served for 16 years as a higher education leader. Over the course of his career, Mark has served as a chief development officer, chief planning officer, chief marketing officer, and as a chief financial officer - working on budgets ranging from $10 million to $30 billion.

Mark grew up in Maryville, TN and currently lives in Brentwood with his wife Cathy who serves as the Executive Director of Leadership Tennessee. He and Cathy have two daughters, Bailey who is a recent graduate at Rhodes College and currently serves as a fellow at the Crop Trust in Bonn, Germany; and Abbie who is rising junior at George Washington University.

Cate received a B.S from Carson-Newman College, an M.S from the University of Tennessee, and Harvard University's Institute for Educational Management certificate program. He's served on a wide variety of non-profit boards and was an elected member of the Maryville Board of Education.

Sydney Ridley brings years of legislative and political experience to Southern Strategy Group's Tampa Bay office. Sydney spent the past four years as the Chief Legislative Aide to House Majority Leader Dana Young, where she directed all priority policy and budget initiatives. Sydney's time as staff was at the highest level of the Florida House of Representatives, and she brings unmatched relationships with legislative staff, agency heads, and elected officials.

A political pro in Tampa Bay with extensive campaign management experience, Sydney guided Senator Dana Young to successive electoral victories in the Florida House and spearheaded her subsequent election to the Florida Senate. Sydney's political expertise, particularly in the Tampa Bay area, serves as a great strategic asset to our clients. In addition to her work with Senator Young, Sydney has served as both a political director and a field director on various Congressional and State Senate campaigns.

Born and raised in Tampa, Sydney is a third-generation Floridian, a graduate of the University of Virginia, a Florida Gator at heart, and a lover of history, golf, music, and football.

Seth McKeel recently concluded a long and distinguished career in public service that began in 2000 with his election to the Lakeland City Commission at the age of 24. Seth was elected to the Florida House of Representatives in 2006 and re-elected subsequently until the conclusion of his eight year term limit in November of 2014. A Tampa Bay area native, Seth's among the fifth generation in his family to call Florida home.

Early in his legislative career, Seth tackled tough issues including higher education reform as well as energy, agriculture, and natural resources policy. A strong commitment to fiscal responsibility earned Seth the trust of House Speaker Will Weatherford. In 2012 the Speaker tapped Seth to be the Chairman of the Appropriations Committee where he led the Florida House's efforts to balance the $77 billion budget of the third largest state in the Union. Under his leadership Florida maintained AAA bond rating and set aside more than $3 billion in healthy reserves.

As a former City Commissioner, Seth understands regional issues and excels at achieving local consensus. Legislative colleagues trusted Seth to chair the Polk County Legislative Delegation, Hillsborough County Legislative Delegation for two years in a row, and larger 9-county Bay Area Legislative Delegation.

A graduate of the University of Florida (UF), Seth recently was awarded the Presidential Medallion, one of the university's highest awards, for his contributions and service to UF and higher education in our state. Seth is a Graduate of Leadership Florida, Leadership Lakeland, and a member of Florida Blue Key -- "Florida's oldest and most prestigious Leadership Honorary since 1923."

Seth credits the YMCA's Youth in Government program for sparking his interest in public service and his respect for civic engagement. Seth has a knack for solving problems and excels at building relationships.

Seth proudly serves on the Board of Directors of the Fish and Wildlife Foundation of Florida and is a member of Leadership Florida's West Central Florida Regional Council.

Seth and his wife Kim, who's also a Tampa Bay native, live in Lakeland with their two children Seth, III and Caroline.

0-5 years

Tony Niknejad is a distinguished policy strategist and government relations expert, skilled in the areas of legislative advocacy, fiscal management, and strategic planning. Tony assists clients with navigating the Tennessee political landscape, orchestrating policy and legislative initiatives, and steering comprehensive advocacy and public engagement campaigns. From 2019 to 2023, he was the Policy Director for Tennessee Governor Bill Lee, serving as a key advisor and leader for the Governor's Cabinet and leading many of the Administration's major policy reforms. As policy director, Tony also played a critical role in Governor Lee's successful 2018 campaign and post-election transition. Tony spearheaded key policy initiatives across a wide span, specializing in education, workforce, tax and healthcare policy.

• He was a driving force behind multiple Administration legislative initiatives, including the Education Savings Account Act of 2019, the Literacy Success Act of 2021, the Tennessee Strong Families Initiative, and the Tennessee Works Tax Act of 2023.


• Tony also led federal and multi-state relations through the COVID pandemic, coordinating the Financial Stimulus Accountability Group, which managed the allocation of over $6 billion in federal funds received through the CARES and American Rescue Plan Acts.


• Prior to his work with Governor Lee, Tony served as state director for a school choice advocacy organization, overseeing Tennessee PAC activities and lobbying efforts from 2013 to 2017.


• Before that, he served as a legislative staffer in the Tennessee State Senate during the 107th General Assembly.


• Tony is a member of the State Bar of Tennessee and graduated from Vanderbilt University Law School in 2011. He received his bachelor's degree from the University of Georgia, where he double-majored in Economics and Philosophy. He was selected for the Harvard Business School Young American Leaders program, Nashville Class of 2019.

David Shepp joins Southern Strategy Group after leading Florida Strategic Group, a full-service government affairs consulting firm, for 13 years. David provides services to state and local governments, businesses, educational institutions, economic development entities, national companies, and statewide trade associations. Activities include legislative and agency monitoring and advocacy, research and analysis, resource development and strategic communications. Throughout his years lobbying, David has secured tens of millions of dollars for clients in the Florida budget.

With a Bachelor of Arts degree in Political Science from Florida State University, David started his practical experience in Florida politics in 1996. David learned the intricacies of the Florida Legislature while assisting the lobbying efforts for multiple clients of the Fowler White Law Firm. Later that year, David accepted a position as a field representative with the Republican Party acting as a liaison to Central Florida candidates, including then-candidate Adam Putnam.

After Rep. Putnam's 1996 campaign, David was retained in the position of Legislative Assistant where he enjoyed four years of relationship building both in Polk County and in Tallahassee before managing now-Commissioner of Agriculture Putnam's victorious Congressional campaign in 2000.

David is skilled at developing, maintaining, and strengthening relationships essential to governmental representation before the Legislature and state agencies. David works very closely with the DeSoto, Charlotte, Hardee, Highlands, Hillsborough, Manatee, Osceola, Pasco, Pinellas, Polk, and Sarasota legislative delegations.

In addition to his comprehensive institutional knowledge of the Florida Legislature, David enjoys personal and professional relationships with legislative leaders and key Chairmen and Chairwomen at every level of the legislative committee structure. David also enjoys strong working relationships with many of the staff behind the scenes of public policymaking.

Laura Boehmer brings a wide range of experience in local, state, and federal policy to Southern Strategy Group's Tampa Bay office. Having worked in and around government for over 16 years, Laura has assisted elected officials, community organizations, governments, and businesses in achieving their goals.

Prior to joining Southern Strategy Group, Laura served as the chief lobbyist for the City of St. Petersburg (City). Laura was responsible for all policy and appropriation issues. In that role, Laura directed the federal appropriations process for the City and succeeded in securing millions of dollars in federal grants and earmarks. In addition to her federal work for the City, Laura was also responsible for developing, strategizing, and advocating for the City's State Legislative Program and was also instrumental in the creation and implementation of the City's Sustainability Program.

In her role at the City, Laura served as staff for former Mayor Rick Baker in his roles as the Chairman of the Century Commission of a Sustainable Florida, Vice Chair of the Governor's Action Team on Energy and Climate Change, and Group Leader of Governor Crist's Transition Team. This experience gave Laura extensive exposure to numerous policy issues and the opportunity to build statewide relationships with political and business leaders.

Prior to working for the City, Laura served as legislative staff in the Florida House of Representatives. Laura also worked for a private lobbying firm representing clients on a wide variety of issues. Laura has staffed and volunteered on various campaigns and worked with a national corporation on nation-wide grass roots efforts to pass legislation. Having analyzed patterns of Congress and maintained PAC communications between a corporate government relations department and PAC members, Laura is well versed in the political efforts of both private and public sectors.

6-10 years

Stephen Susano is the Co-Founder and COO of Stones River Group, a Nashville-based public affairs firm serving both Tennessee, regional and national clients. He provides clients with strategic counsel on business opportunities and project management, regulatory matters, procurement, economic development, third-party engagement, and market positioning. Stephen leverages his lengthy private-sector experience and deep network of relationships with business leaders and key policymakers in state and local government across Tennessee to deliver solutions for clients in multiple industries.

Prior to Stones River Group, Stephen served as Executive Director of the Tennessee Business Partnership (TBP), an advocacy organization supported by many of the state's leading enterprises. He spearheaded its efforts to advance pro-business policies, including education and judicial reforms, to encourage job growth and economic development. In 2014, Stephen led the statewide "Vote Yes on 2" campaign in support of the Judicial Selection Amendment to the Tennessee constitution. Stephen built a broad coalition of business groups, trade associations, legal advocates and community leaders in favor of the amendment. This coalition's successful mobilization helped ensure the amendment was approved with overwhelming support, carrying 94 out of 95 counties in Tennessee

Prior to working in the public affairs space, Stephen had an extensive career in the financial services industry. He served in operating and business development roles for several investment advisers and asset management firms. He has consulted with and raised capital for both U.S. and foreign-based investment firms, and has negotiated distribution and trading agreements with multiple financial services companies. Through his work, Stephen navigated complex regulatory regimes in domestic and offshore jurisdictions

Stephen grew up in Knoxville, Tennessee and currently lives in Brentwood with his wife, Ana. He and Ana have four children. Stephen serves on the board of the Nashville Downtown Partnership.

0-5 years

Chris Gobble is a respected government affairs specialist with deep issue expertise and a broad base of policymaker and stakeholder relationships. He leverages his insights into the state General Assembly, Tennessee executive branch, and local governments to help SRG clients navigate complex political challenges and effectively advance meaningful policy solutions.

Prior to joining SRG, Chris served as senior director of public policy for the Chattanooga Area Chamber of Commerce, where he helped drive policy changes and facilitate government affairs efforts for 2,000 businesses representing over 180,000 employees. He also regularly and effectively collaborated with local, state, and federal elected officials to advance Chattanooga's status as a leader in education, workforce, and economic development.

Prior to Gobble's tenure in Chattanooga, he was the legislative and policy director for the Tennessee Department of Safety and Homeland Security. In this role, Gobble worked closely with Governor Bill Haslam's office and the state legislature to develop and implement a variety of public policy initiatives.

Originally from Bradley County, Chris earned a B.A. in Political Science and Communications from Lipscomb University. He and his wife Sarah live in Nashville.