A lifelong Republican, Debbie has served the Republican Party as the vice-chairman of the finance committee of the Harris County Republican Party and as chairman of the building committee for the Texas Federation of Republican Women. Debbie is also past president of the Texas Tea Party of Republican Women and has served on the board of the Spring ISD Education Foundation and Klein ISD Education Foundation. At the national level, Debbie serves on the board of the Jewish Institute of National Security Affairs out of Washington, D.C. She is an ardent supporter of Israel and organizations supporting Israel.

Debbie Riddle now proudly represents the people of district 150 in the Texas House of Representatives.