|South Dakota State Senate District 16|
| Term in office began|
| Term in office ended|
Gillespie also served in the South Dakota State House from 2000-2008.
Gillespie has worked as a reporter for KELO-Television. She worked as an attorney for Minnehaha County Public Defender's Office from 1996 to 1999. She has worked as an attorney for Gallard Legal Clinic since 2000. She has also worked as a lawyer for Gubboud, Hougland and Gillespie since 2001.
Gillespie earned her BA from Augustana College in 1991. She went on to receive her JD from the University of South Dakota School of Law in 1996.
Prior to leaving the South Dakota State Senate, Gillespie served on the following committees:
- Government Operations and Audit Committee, South Dakota Senate
- Judiciary Committee, South Dakota Senate
- Local Government Committee, South Dakota Senate
Gillespie did not run for re-election to the 16th District Seat in 2010. The general election took place on November 2, 2010.
Gillespie raised $17,224 for her campaign while Albers raised $24,626. 
|South Dakota State Senate, District 16 (2008)|
|Margaret Gillespie (D)||5,931||50.50%|
|Kenneth D. Albers (R)||5,813||49.50%|
Gillespie raised $17,224 during the 2008 election cycle.
Her top contributors are listed below.
|South Dakota Trial Lawyers Association||$5,500|
|South Dakota Education Association||$2,500|
|South Dakota Majority Project||$1,000|
|Union County Democrats||$700|
|South Dakota Association of Specialty Care Providers||$400|
|South Dakota State Medical Association||$300|
|South Dakota Chiropractors Association||$300|
|South Association of Realtors||$300|
|International Brotherhood of Teamsters||$300|
|South Dakota Retail Liquor Dealers Association||$300|
Gillespie is married.
|South Dakota House District 16
| Succeeded by|
|South Dakota Senate District 16
| Succeeded by|