David is a Christian and a rural conservative Republican. David works to advance and defend the conservative principles, values and beliefs of the people of HD 68, and to provide experienced, knowledgeable and accessible representation that the citizens of HD 68 deserve.

David works to secure the border, fights for lower taxes, protects the right to life, defends the 2nd amendment, protects rural schools and rural hospitals, strives to provide rural Texas with access to high-speed internet, defends property rights and water rights, and works to make government more efficient.

David was named a Faith & Family Champion by Texas Values, received the Courageous Conservative Award from the Texas Conservative Coalition, was listed in the Top 10% Most Conservative Representatives by Young Conservatives of Texas, and received the Civil Justice Leadership Award from Texans for Lawsuit Reform.

David was born and raised in Jacksboro. After graduating from Jacksboro High School in 1979, he attended The University of Texas at Austin, where he received his B.B.A. degree in 1983. David then attended St. Mary's University School of Law, where he received his Juris Doctor degree in 1986. He immediately returned to Jacksboro to live, work and raise a family. David has practiced law for over 35 years with the law firm of Spiller & Spiller, now practicing with his two sons, Mason and Reid, and previously practicing with his father, James, and his brother, Scott. David also owns Spiller Title, believed to be the oldest family-owned title insurance company in the State of Texas, started by his great grandfather in 1888. As part of his general law practice, David has served as both City Attorney for the City of Jacksboro and General Counsel to the Jack County Hospital District for over 30 years. He is also a Credentialed Advanced mediator, having mediated well over a thousand cases. An AV rated attorney by Martindale-Hubbell and a Fellow of the Texas Bar Foundation, he has been named a Top-Rated Lawyer in Texas and is a Founding Member of the Pro Bono College of the State Bar of Texas. David is a member of the American Board of Trial Advocates (ABOTA), an invitation-only national association of more than 7,600 experienced trial lawyers and judges.

David also served as a Trustee of the Jacksboro Independent School District for 26 years.

David lives in Jacksboro with his wife of 35 years, Ginger. Ginger has taught school for over 30 years. David and Ginger have two sons, Mason and Reid, who are both attorneys in Jacksboro. Mason and his wife, Alexandra, have two children, Shepherd and Sloane. Reid and his wife, Haley, have two children, Carson and Campbell. The Spillers are members of First Baptist Church of Jacksboro.