Thursday, October 15, 2026
B.C. votes in 9 days

Yvelines — 4ème circonscription

Legislative constituency · Yvelines

Forecast of July 11, 2026

Our forecast gives the centrist bloc a more than 99% chance of winning, with an average lead of 9.8 points.

Safe seat. Chance of a final gap under 5 points: 1%.

Projected vote share

Projection by party

  • Centre (Ensemble) 36.1%
  • Left (NFP) 26.3%
  • RN and allies 24.3%
  • LR and allies 10.5%
  • Others 2.0%
  • Far left 0.7%

Thin vertical mark: 2024 result.

Compared with the average

Centre (Ensemble) Left (NFP) RN and allies LR and allies
Yvelines — 4ème circonscription 36.1%26.3%24.3%10.5%
Provincial averageYvelines 26.0%+10.1 29.5%−3.2 26.9%−2.5 13.4%−2.9
National averageFrance 17.0%+19.1 29.0%−2.7 36.0%−11.6 12.2%−1.8

Simple average of the 577 ridings, not weighted by population.

Current member

Marie LEBEC · Centre (Ensemble)

Previous election (2024)

The centrist bloc won by 0.0 points.

Our current projection: the centrist bloc ahead by 9.8 points.

Candidates and votes in 2024

Candidate Party Votes %
Marie LEBEC Elected Centre (Ensemble) 23,932 41.2
Céline BOURDON Left (NFP) 15,787 27.2
Jean-François MOURTOUX RN and allies 11,599 20.0
Anne-Sophie HO MASSAT LR and allies 5,383 9.3
Manon BARDY RN and allies 835 1.4
Franck MAUREL Far left 489 0.8
James POGGIA Others 2 0.0

Nearby ridings

Party ahead and how sure the projection is.

Forecast updated