U.S. Rep. John Sarbanes of Maryland announced Thursday that he will not seek reelection in 2024.

Sarbanes, who has represented Maryland’s 3rd congressional district since 2007, said in a statement that he wants to return to working in different areas of public service, such as nonprofits and volunteer work.

His announcement comes at a time when at least two other Maryland congressional seats are also up for grabs in the 2024 election. Rep. David Trone is giving up his seat to run for U.S. Senate, and two other Democrats, Reps. Steny Hoyer and Dutch Ruppersberger, have yet to announce whether they will seek re-election.

Possible contenders to replace Sarbanes in the 3rd congressional district include Howard County Executive Calvin Ball and State Delegate Vanessa Atterbeary.

Sarbanes has been a leading voice on issues such as healthcare, climate change, and campaign finance reform. His father Paul Sarbanes represented Maryland’s 3rd congressional district for three terms before being elected to four terms in the U.S. Senate.