Case Study: La République En Marche achieves parliamentary majority (350 seats) with NationBuilder

How La République En Marche reached a parliamentary majority

La République En Marche faced the urgent challenge of turning Emmanuel Macron’s presidential win into a functioning national party and winning legislative elections just weeks later. To scale fast across hundreds of locally run campaigns, LREM used NationBuilder and the NationBuilder Network to create a consistent digital infrastructure that could share data, templates, and organizational tools across many candidates.

NationBuilder helped LREM rapidly deploy that infrastructure — building 378 “nations” in 31 days with opted-in supporter lists, shared geographic tags, and action-focused templates plus installation support — so independent candidates could run their own campaigns while remaining united. The result was a decisive victory: La République En Marche captured a parliamentary majority (winning 350 seats) and mobilized hundreds of successful candidates, demonstrating NationBuilder’s measurable impact on speed and scale.

La République En Marche

Emmanuel Macron

President