Senator Lisa Baker was sworn-in to serve her first term on January 2, 2007, and represents the 20^th Senatorial District, which encompasses parts of Luzerne, Monroe and Susquehanna counties and all of Pike, Wayne and Wyoming counties. She serves as chair of the Senate Veterans Affairs and Emergency Preparedness Committee. She is a member of the Communications and Technology, Community, Economic and Recreational Development, Education, and Public Health and Welfare committees, and the Community College and Sportsmen caucuses. 

Prior to being elected to office, Senator Baker held various leadership positions within Pennsylvania state government. She served as deputy chief of staff to Governors Tom Ridge and Mark Schweiker, director of Tom Ridge's Northeast Regional Office, chief of staff to state Senator Charles Lemmond and research analyst to state Senator Robert C. Jubelirer. Most recently, Senator Baker served as the executive director of The Blue Ribbon Foundation, which was established to support health and wellness initiatives in northeastern and north-central Pennsylvania.  In each of these roles, she worked with officials from federal, state and local governments, the business community, and other concerned citizens, to create a better Pennsylvania.

Active in community and civic organizations, Senator Baker currently serves on the board of directors of the Children's Service Center, the Children’s Trust Fund, the United Way of Wyoming Valley, the advisory board of Penn State Wilkes-Barre, and as East Stroudsburg University’s 2007-08 legislative fellow. She is a former member of the board of directors of the Pennsylvania Association of Nonprofit Organizations, Leadership Wilkes-Barre, the Council of Trustees of Shippensburg University, and served as Chairperson for the United Way of Wyoming Valley's 2004-2005 Community Campaign. 

Senator Baker is a graduate of Dallas High School and Shippensburg University, where she received a B.A. in Government Administration. She is also a graduate of the Anne B. Anstine Excellence in Public Service Series, the Senior Executives in State and Local Government program at the John F. Kennedy School of Government at Harvard University, and the Strategic Leadership for State Executives program at the Governor's Center at Duke University.

Senator Baker resides in Lehman Township, Luzerne County, with her husband of 22 years, Gary, and their son Carson, a tenth-grade student at Lake-Lehman High School.