California State Capitol Building Inner Rotunda


We pass new laws, no matter how ambitious or complex. We defeat bad legislation, no matter how much firepower is on the other side. We develop sound policy proposals that cut through the noise. We work with regulators to implement rules in a clear and advantageous fashion. We move government faster than it would otherwise move. We do all of this to support the goals of clients who are seeking to better the state of California and the world.

US Flags Waving

Public Affairs

We build broad support for policy outcomes. We assemble an army of powerful and diverse voices beside you. We call on our unmatched relationships with California’s leaders and the deep respect we carry with the most influential organizations in the state. We enhance reputations and establish political power for our clients.

Procurement Paperwork Signing


We create markets where they didn’t previously exist. We win business with governments. We position government to support and enhance investment in the state. We call on our reputation as a respected intermediary to establish strong relationships between our clients and procurement officials.



  • “Blue Shield has benefited tremendously from Weideman’s high integrity, outstanding advocacy, and sophisticated strategies.”

    Paul Markovich

    President and CEO Blue Shield of California
  • “One of the top lobby firms, the Weideman Group.”

    CAL Matters

  • “There is no better lobbying firm in California than Weideman Group. I’m certain of it. They have helped us to enact bold policy over determined opposition, they have unmatched relationships with the leaders of the state and an incredible command over the legislative and regulatory process.”

    Kelly Kimball

    Chairman Motor Vehicle Software Corporation
  • “Weideman Group operates with a level of professionalism and expertise we simply haven’t seen before. They are highly trusted advisors that have helped us skillfully navigate complicated legislative and regulatory matters and they have consistently ushered through successful government procurements.”

    Stella Li

    President BYD Motors
  • “Weideman is a first-rate lobbyist and attorney, plugged into the Capitol on major issues. If it’s happening, he’s probably there…Weideman is trusted by the administration.”

    Capitol Weekly

  • “The professionalism and tireless efforts of the Weideman Group played an important role in the extension of a legislative policy that was significant to our company and our customers in California. They exercise confident control over all facets of the policy making process.”

    KR Sridhar, Ph.D

    Founder, Chairman and Chief Executive Officer Bloom Energy
  • Mark Weideman, “...one of the top lobbyists in Sacramento.”

    The Hill


  • Mark Weideman
    Mark Weideman Principal

    Weideman has decades of experience representing some of the nation’s most sophisticated and politically powerful clients. He provides strategic advice and counsel to his clients designed to achieve their objectives before government entities and acts as their chief advocate before legislative, regulatory and administrative bodies. Weideman has been the architect of successful procurements that have landed clients billion dollar and multi-million dollar contracts. He designs grassroots campaigns that provide broad organic support for policy initiatives and he coordinates activity in local, state and national elections.

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  • Tim Valderrama
    Tim Valderrama Managing Director

    Valderrama is a Capitol veteran, having served in staff leadership roles in both the Senate and Assembly. As Managing Director of the Weideman Group, he spearheads strategic engagement with legislative, administrative and regulatory entities. Clients benefit from Valderrama's extensive knowledge of the legislative process and his strong bipartisan relationships with legislators, staff and administration officials. He has experience in all phases of political work including coalition building, grassroots mobilization, strategic planning, PAC management and legislative/initiative campaigns.

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  • Ryan McCarthy
    Ryan McCarthy Director of Climate and Clean Energy

    McCarthy has been a leader at the forefront of climate, energy, technology and transportation policy in California for nearly 20 years. He leads Weideman Group's growing climate and clean energy practice, where clients benefit from his deep analytical, regulatory and legislative expertise.

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  • Faith Conley
    Faith Conley Director

    Conley is a nearly two-decade veteran of California’s legislative, regulatory and political arenas. She has led government affairs on behalf of some of the most sophisticated entities in the state, including the Los Angeles County Board of Supervisors where she spearheaded the County's work on ending predatory lending statewide, negotiated an agreement between paint manufacturers and local governments for lead paint abatement, and led the County's efforts to implement SB 1383 organic waste recycling. She represented the largest County in the country in discussions with the Administration, Legislature, and state agencies, securing millions in funding for Los Angeles residents during the COVID-19 pandemic.

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  • Daniel Kim
    Daniel Kim Director of Procurement

    Kim is a nationally recognized leader in government operations with over 20 years of executive level experience at the state and local levels. As the Director of the California Department of General Services (DGS) for two governors, Kim developed deep knowledge of state policy, procurement, and regulations. Kim led the State’s COVID-19 Logistics and Commodity Movement Taskforce and served as Chair of the California Pharmaceutical Collaborative. As DGS Director, Kim transformed DGS to become a national leader in sustainability in procurement, construction, fleet and clean energy. He also led efforts to revamp the IT purchasing roles for DGS and the California Department of Technology, negotiate the state’s first project labor agreement, and leverage underutilized state property to build affordable housing.

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  • Bethany Heckman
    Bethany Heckman Director of Operations

    Heckman oversees the internal business operations of the firm and provides legislative and regulatory support for the firm’s clients. She previously worked in the California State Legislature in policy and constituent facing roles. Heckman also worked in operations and special project roles for several non-profit and community based organizations. She received her bachelor’s degree in Journalism from the California State University, Chico.

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  • Meegen Murray
    Meegen Murray Associate

    Murray is a registered lobbyist for Weideman Group. She provides direct lobbying, strategic counsel, legislative tracking, regulatory monitoring and procurement services for the firm's clients. Murray has over 15 years’ experience working in the Legislature and oversaw the legislative agendas for several Senators and State Assembly Members. She received her bachelor's and master’s degrees from California State University, Sacramento.

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  • Rachel Mueller
    Rachel Mueller Associate

    Mueller is a registered lobbyist for Weideman Group. She provides direct lobbying, strategic counsel, legislative tracking, regulatory monitoring and procurement services for the firm's clients. Mueller previously oversaw government affairs for a large advocacy organization in California, serving as a policy and advocacy specialist for rural and Tribal communities. She received her bachelor's degree magna cum laude from California State University, Sonoma.

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  • Greg Reading
    Greg Reading Account Executive

    Reading is an Account Executive at Weideman Group and provides internal planning, research, and project management designed to advance client opportunities. He comes to the firm after working in government affairs for a clean transportation provider and has a professional and educational background in the Environmental sector. Reading received his bachelor’s degree from California State University, Sacramento.

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  • Sarah Brennan
    Sarah Brennan Account Executive

    Brennan is an Account Executive at Weideman Group and provides internal planning, research, and project management designed to advance client opportunities. She previously worked with the regulatory team at the Association of California Water Agencies. Brennan received her Bachelor of Arts degree from the University of California, Davis, where she studied International Relations, Natural Resources and Native Studies.

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  • Gabriella Clayton
    Gabriella Clayton Account Executive

    Clayton is an Account Executive at Weideman Group and provides internal planning, research, and project management designed to advance client opportunities. She previously worked as a legislative aide for former Assembly Member Jordan Cunningham. Clayton received her Bachelor of Arts degree in Communications and Sociology with an emphasis in law from the University of California, Davis.

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