The September 27 senatorial elections marked a significant advancement for the National Rally (RN) and its allies, including the Union of the Right for the Republic (UDR) founded by Eric Ciotti. The party and its partners elected 12 new senators, allowing them to form their first official group in the Senate, surpassing the threshold of ten parliamentarians necessary to establish a group. This outcome was not initially anticipated by Marine Le Pen's supporters. The RN concentrated its gains primarily in the Mediterranean periphery, securing its first two senators in the Var and the Bouches-du-Rhône departments. It also secured a seat in Gironde with Edwige Diaz and in Seine-Maritime with Léon Levasseur. In some departments, the RN narrowly missed additional seats; in the Somme, it missed by 57 votes, and in the Bas-Rhin, it narrowly escaped by 43 votes. The RN and its allies received 11,725 votes in the 61 constituencies where they were in contention, representing 13.24% of the registered voters. This is a significant increase from the 3280 votes (3.78% of registered voters) they received in 2020, representing a 3.5-fold increase in their electoral weight. In the Bouches-du-Rhône, the RN doubled its votes, from 345 to 685. In Vaucluse, the list multiplied its electoral weight by more than two, going from 157 to 349. The progress reached 143% in the Gard and 143% in the Hérault, where the RN went from 118 to 328 votes. In Gironde, the RN list increased from 79 to 709 votes in six years, convincing 18.94% of the electors. In Seine-Maritime, the party's list collected 406 votes, well beyond the 89 collected six years ago. The National Rally's performance was particularly strong in departments where the vote was proportional, with the RN and its allies gathering 13.80% of the registered voters. In departments with a majority vote, the multiplier effect since 2020 was sometimes impressive, with the RN increasing its votes by up to 300% in certain territories. In Côte-d'Or, the RN went from 38 to 193 votes (11% of the expressed). In Ardèche, the party increased from 13 to 76 votes (7%). In Haute-Saône, the increase was almost tenfold, from 16 to 153 votes (16%). In Sarthe, Marie-Caroline Le Pen, sister of Marine Le Pen, obtained 193 votes (12%), clearly above the 22 votes of her predecessor in 2020. Political scientists and constitutionalists note that the RN's success is due in part to its growing network of electors obtained at the municipal elections and the territorialization of its presence through its networks of deputies and local elected officials. The party's ability to secure votes in departments where it was previously anecdotal or non-existent highlights its increasing influence. Constitutionalist Benjamin Morel projects that the RN group may grow from 15 to 20 members in the next senatorial elections planned for 2029. Despite challenges imposed by the senatorial voting system, the RN has established itself durably and is on the path to normalization in the political system.