David Chalian, a veteran political journalist who has long helped put together CNN’s most important nights of election coverage, has been named the network’s Washington Bureau chief.

Chalian will now oversee the network’s Washington, D.C. bureau as well as CNN’s Washington political news coverage. He will continue to supervise CNN’s daily political reporting across all platforms, the polling and decision desk operations, and the editorial content for special political programming. He will also remain CNN’s political director, a role he has held since 2014.

He replaces Sam Feist, the longtime supervisor of CNN’s Washington operations,...