Bonnières-sur-Seine: Agir ensemble pour Bonnières-sur-Seine won the town hall in 2026; Marine Le Pen would lead here in 2027
Bonnières-sur-Seine (Yvelines, INSEE 78089) has 2,890 registered voters. Its council has 29 seats; the 2026 municipal election was settled in the first round on 15 March. The next municipal elections are in 2032; the presidential election is on 18 April 2027.
- 2,890registered voters
- 50%turnout, 2026 round one
- 41.4%Marine Le Pen, 2027 round one here (France: 34.2%)
The municipal election, March 2026
Round one, 15 March · 1,458 voted, 1,418 valid votes
- Agir ensemble pour Bonnières-sur-SeineMiscellaneous right 60.0% · 851 · 24 seats
- Bonnières s'écrit avec vousMiscellaneous centre 40.0% · 567 · 5 seats
Official results, Ministère de l'Intérieur. Lists are labelled with the ministry's political "nuance"; lists in small communes carry none. The list that comes first takes half the seats as a bonus, and the rest are shared in proportion among lists over 5%.
The 2027 presidential election here, round one
Our national forecast for round one, carried down to Bonnières-sur-Seine from how it voted in 2022.
- Marine Le PenNational Rally 41.4% · France 34.2%
- Jean-Luc MélenchonFrance Unbowed 20.9% · France 16.8%
- Raphaël GlucksmannSocialists 11.6% · France 13.4%
- Édouard PhilippeEnsemble (Macron camp) 11.0% · France 14.3%
- Bruno RetailleauRepublicans 6.1% · France 7.6%
- Éric ZemmourReconquête 3.3% · France 3.8%
- Fabien RousselCommunist Party 1.9% · France 2.0%
- Marine TondelierGreens 1.8% · France 2.9%
- Nicolas Dupont-AignanSovereigntists 1.6% · France 2.1%
- Nathalie ArthaudFar left 0.5% · France 0.6%
In 2022, round one here: National Rally 29.0% · France Unbowed 28.4% · Ensemble (Macron camp) 22.1% · Reconquête 6.4% · Republicans 3.6%. Each political family moves by its national change since 2022 (half uniform, half proportional), scaled so that every commune adds up to our national forecast. The national forecast →
Communes of a similar size in Yvelines
- Ecquevilly2,846 voters · Miscellaneous right
- La Verrière2,846 voters · Miscellaneous right
- Juziers2,835 voters · Miscellaneous
- Mareil-Marly2,963 voters · Miscellaneous centre
- Mézières-sur-Seine2,818 voters · Miscellaneous centre
- Le Port-Marly3,002 voters · Miscellaneous centre
- Issou3,017 voters · Miscellaneous
- Ablis2,733 voters · Miscellaneous