20+ years

With decades worth of hands-on experience in Texas government and politics, Sabrina Brown offers valuable strategic counsel, as well as access to a vast network of key associates and decision-makers to a broad spectrum of clients.

Brown's extensive expertise in the state's legislative, regulatory, public affairs and appropriations arenas - combined with her strong bipartisan relationships - provides businesses and organizations with vital political and governmental guidance. Utilizing her many contacts within the Texas House and Senate, Executive Office and state agencies, Sabrina has effectively achieved the public policy goals of a wide variety of clients, from aeronautics giants to groundwater districts to Fortune 100 companies.

Prior to opening her own consulting firm, Sabrina was a highly successful lobbyist for an Austin-based law firm, and previously spent a half-dozen years at the Capitol working for the Texas House of Representatives. Her first-hand experience has given her a detailed familiarity with the legislative process and an in-depth understanding of state lawmakers' perspectives. With these insights, Sabrina creates effective messages and uses her firm's resources to efficiently communicate a client's position to busy legislators.

Brown earned her Masters in Public Affairs at the Lyndon B. Johnson School of Public Affairs at The University of Texas, and her bachelor's degree at Texas A&M University.

Brown currently serves on the boards of Dell Children's Medical Center Foundation, West Austin Youth Association, Beyond Batten Disease Foundation, Friends of the Governor's Mansion, Texas Conference for Women, and the Seton Development Board.

Mandy Drendel joined the Cornerstone Illinois team as a vice president in January 2021. She is an attorney and registered lobbyist with experience advocating on behalf of clients before the Illinois General Assembly and Executive Branch. As a contract lobbyist, Mandy's worked on behalf of industries including telecommunications, energy, gaming, healthcare, insurance, education and cannabis.

Prior to joining Cornerstone, she served as senior legal counsel in the Illinois Senate President's office where she worked on telecommunications, insurance, tax, and pension issues. During her tenure, Mandy helped lead major legislative initiatives including a telecommunications rewrite, small cell wireless deployment, major insurance legislations, revenue packages, property tax relief and pension reform.

Before that, Mandy served on the Senate Democratic legal team, and acted as the caucus's key regulatory and administrative rule specialist where she staffed the General Assembly's administrative rulemaking committee. This experience provided her direct access and insight into the regulatory arm of Illinois state government.

Mandy received a Juris Doctorate from the Loyola University Chicago School of Law and a Bachelor of Arts degree from Washington University in St. Louis, Missouri.

Part of Boston's State and Local Affairs practice, representing clients ranging from Fortune 50 companies to non-profits. Represents a diverse set of clients; i.e., energy, high tech, healthcare, finance, consumer, and non-profit. Mulvey manages Boston's state and municipal procurement practice.

Prior to coming to DSG, Mulvey was a Principal at Fort Hill Advisors, a boutique lobbying firm located on Beacon Hill in Boston. Mulvey also worked in the Government Law & Strategies Legal practice at the Law Firm of Brown Rudnick. He also served as General Counsel for the Retailers Association of Massachusetts.

Mulvey was born and raised in Belmont, MA. He currently resides in Reading, MA with his wife and four sons. Mulvey is a 1991 graduate of Stonehill College and a 1997 graduate of the Massachusetts School of Law.

Julia Larkin joined Cornerstone Government Affairs in February 2020 with more than 12 years of legislative experience in the state of Illinois. In her role as vice president, Julia uses her skills to help clients in Illinois advance their advocacy goals. Prior to joining Cornerstone, Julia served as the director of advocacy and government relations at AMITA Health, one of the largest health systems in Illinois. During her time in this role, Julia represented the organization's mission with state and local officials and executive agency staff, while also creating and executing strategies to ensure specific policy goals were met.

Previously, Julia served as legislative coordinator to Speaker of the Illinois House Michael J. Madigan for 10 years, where she assisted in the development of a wide array of policy positions and legislative initiatives. Julia has also supported the Democratic Party of Illinois, where she led state representative campaigns, managed opposition research and oversaw state representative candidate recruitment efforts.

Julia received her Bachelor of Arts with a double major in political science and international studies from Loyola University in Chicago.

6-10 years

Elkey Award Recipient for Campaign Strategist of the Year - 2014
5 Time Goldies Recipient
3 Pollie Awards Recipient
Rising Star Award Recipient
National Comeback Campaign of the Year Recipient - Reed Awards

Chris Keohan is the Founder and Principal of Shawmut Strategies. Prior to his work with SSG, Chris worked as a senior staffer in political, field and finance departments for multiple local, state and federal campaigns. He then founded CK Strategies in 2009.

Chris has continually expanded and evolved his business model. Today, his expertise and offerings encompass far more than political strategy. Working with developers, financial institutions, contractors and a wide variety of other business interests Chris is providing strategic planning for projects that bring developments of all sizes to communities across Massachusetts. Specifically, Chris has served as a liaison to local boards and elected officials. He has developed outreach plans and grassroots strategies to ensure the success of local projects.

Politically, Chris has served as a senior advisor to Marty Walsh's successful Mayoral campaign in Boston, and to Deborah Goldberg's successful campaign for Treasurer. He also served as the Executive Director of Treasurer-elect Goldberg's transition team.

In 2015 Chris was the winner of the 1st ever Elkey Award for Campaign Strategist of the Year. The Elkey Awards is a bipartisan event that honored political operatives and candidates for outstanding achievement during the 2014 election cycle. He was also the recipient of 2 Goldies for excellence in Mail and Overall Campaign for his work on Mike Brady for State Senate. The Goldies are a national award program that chooses and judges entries with a bipartisan panel of peers within the political consulting industry.

In 2014 Chris was the winner of three prestigious "Pollie Awards" from the American Association of Political Consultants for his role in Marty Walsh's campaign for Mayor. In 2012, Chris was honored to receive the prestigious "Rising Star Award" by Campaigns and Elections Magazine. He has also received the "National Comeback Campaign of the Year" for his work on Ayanna Pressley's 2011 campaign for Boston City Council At-Large.

Chris Keohan is a 2003 graduate of Boston College with a Bachelor of Arts Degree in Political Science and a concentration on Environmental Studies. He has worked on campaigns in Massachusetts, New Hampshire and Virginia, as well as traveling to 35+ states performing advance work during multiple Presidential campaigns.

20+ years

I served over twenty years at the local, state legislative and executive levels of government before entering the private sector. My background includes serving former Massachusetts Governor Mitt Romney as Legislative Director and working along-side the former Speaker of the Massachusetts House of Representatives, Thomas M. Finneran. I also worked as the Director of Government Relations & Educator Licensure for the Massachusetts Department of Education. Elected to two terms as a Revere, Massachusetts City Councilor-At-Large, and a member of Revere's School Committee for 6 consecutive years, I am also a licensed Superintendent, Assistant Superintendent and School Business Administrator in Massachusetts.

Throughout my career, I have been fortunate to establish lasting relationships which have led to noteworthy victories on behalf of clients. Whether it is legislative or regulatory; fiscal or procurement related, my respect, access and ability to nimbly navigate government is unrivaled.

0-5 years

Will Cousineau joined Cornerstone's Springfield, Illinois office in June 2017. Will comes to the firm after nearly 18 years working for Illinois House Speaker Michael J. Madigan, including eight years as political director for the Speaker and the Democratic Party of Illinois.
Will was the longest serving political director for Speaker Madigan and most recently served as senior advisor to the Speaker. Over the past 10 years, Will worked directly with Speaker Madigan to shape, develop and implement the strategy and messaging for the Speaker's legislative and political agenda and the agendas of every member of the House Democratic Caucus. He also developed the implementation of political, legislative and outreach strategies for House Democratic Caucus members and all aspects of the Illinois House's political operation.

During his time with the Speaker's office, Will was involved in the major initiatives that moved through the Legislature over the past ten years, including such legislation concerning utilities, conceal and carry, financial institutions, and civil laws. Additionally, Will was intimately involved in the 2010 drawing of legislative districts, including new districts in the suburban region that have helped House Democrats expand and maintain their majority. While many democratic legislative caucuses across the country lost record numbers of seats during his tenure and every legislative chamber in the Midwest outside Illinois became Republican controlled, Will guided the Illinois House caucus and the Democratic Party of Illinois through a period of expansion and maintained a healthy majority for Illinois House Democrats.

Will's long tenure with the House, experience with message development, crisis management, grassroots organizing and input on political campaigns for offices throughout the state, gives Will an ability to understand complex legislative and political problems, easily digest those issues for members and clients and put together a collaborative and detailed action plan for moving forward.

In 2014, Will and his wife, Macy, adopted three sisters from Latvia. This experience has shaped their family, has given them the opportunity to speak with others about adoption and has encouraged their family to assist others who are adopting children both internationally and domestically. In 2016, Will and Macy's family grew with the arrival of their son.

In his spare time, Will is active in his church and serves on the Board of Elders. Will currently resides in Chatham, IL with his wife and four children.

6-10 years

Dianne began her career at the Massachusetts State House alongside freshman State Representative Marty Walsh, now former Secretary of the US Department of Labor. From there, she led public policy and intergovernmental relations for Massachusetts public safety and public health agencies. In those roles, she secured major funding for operations and capital improvements, and policies to improve services to the Commonwealth's most vulnerable residents. Shortly after Walsh became Mayor in 2014, she helped him build out Boston's first-ever Economic Development cabinet.Her experience includes public policy, legislative, and regulatory work for legislative, executive, and independent state agencies, municipal government, political campaigns, and private consulting. Dianne specializes in public safety, construction trades issues, the cannabis industry, and public health.