The September 27 indirect election renewing 178 Senate seats centers trader focus on Les Républicains’ net change from their current 130-131 total. The electoral college of municipal and departmental councilors has historically favored established right and center-right lists, supporting internal projections of modest losses between three and five seats after earlier forecasts of nine or ten were revised downward. Localized risks persist in departments such as Alpes-Maritimes and Bouches-du-Rhône, where multiple right-leaning lists and competition from Rassemblement National allies could produce targeted setbacks, while unity among LR candidates and left-wing fragmentation elsewhere offer offsetting gains. These cross-pressures sustain tight probabilities across the 121-128 range, with outcomes hinging on final vote tallies and subsequent group affiliation declarations by mid-October.