Like the other 576 French constituencies, it elects one MP using the two-round system, with a run-off if no candidate receives over 50% of the vote in the first round.

The 5th Constituency of the Seine-Maritime covers a large central area in the southern part of the department to the west of Rouen.

Politically the seat has remained a solid bastion for the Socialist Party.

Christophe Bouillon was elected mayor of Barentin on 28 May 2020 and resigned on 18 June for multiple mandates.

His substitute, Bastien Coriton, also elected mayor in Rives-en-Seine, resigned five days after taking office.