The 2nd constituency of Marne (French: Deuxième circonscription de la Marne) is one of five electoral districts in the department of the same name, each of which returns one deputy to the French National Assembly in elections using the two-round system, with a run-off if no candidate receives more than 50% of the vote in the first round.

The seat as currently delineated is substantially different from that which existed prior to the 2012 election, which contained little of Reims and was far more rural in character.

However, in the 2017 election Vautrin lost her seat to Aina Kuric of La République En Marche!

[3] [4] * Kuric stood as a dissident LREM candidate, without the support of the party or the Ensemble Citoyens alliance.

Kuric's results in the last election are counted against the official LREM candidate for swing calculations.