WILMINGTON — Former state Rep. Dennis E. Williams filed for his old seat in the 10th Representative District Thursday.

A Democrat, Mr. Williams held the seat from 2008 to 2014 before being defeated by Rep. Sean Matthews in a primary.

“Since leaving office in 2014, many neighbors, as well as business and community leaders have approached me urging me to run, citing my outstanding constituent services and the financial knowledge and experience that I would bring to the state capital,” Mr. Williams said in a statement.

“I am a proud lifelong resident not only of the state of Delaware, but of the 10th District. It is where I chose to attend college and then raise my family. While our state continues to exhibit a tremendous amount of potential, it is obvious that our state is facing numerous difficulties. My fellow neighbors in the 10th District and the state of Delaware deserve a representative who can master difficult financial and budgetary problems, propose common-sense solutions to environmental issues, promote economic growth, create job opportunities and work towards realizing a system of first-class 21st-century public education and affordable higher education for all Delawareans.”

The district covers the northernmost part of New Castle County. Rep. Matthews is expected to run for re-election at this stage.