Mary Cavanagh serves as Assistant Majority Whip. She represents parts of Detroit, Farmington Hills, Livonia, and all of Farmington and Redford Township.

Senator Cavanagh is Chair of Finance, Insurance, and Consumer Protection, Chair of Labor & Economic Opportunity (LEO)/MI Economic Development Corporations (MEDC) Appropriations Subcommittee, Chair Licensing & Regulatory Affairs (LARA)/Department of Insurance & Financial Services (DIFS) Appropriations Subcommittee, and Vice-Chair of Economic and Community Development.