Social Democratic primary: Glucksmann and Faure clash over breaking with LFI

1 octobre 2026 4 Min Read

In an editorial published on September 30, 2026, Le Nouvel Obs presents the social-democratic primary as a way to avoid a duel between Jean-Luc Mélenchon and the far right in the 2027 presidential election. The question posed by the first debate between candidates is more specific: should they break with La France Insoumise, including in future legislative elections? Between primary rules, voting intentions, and party financing, several factors allow us to understand what this choice entails—without predicting the outcome.

A primary with five people, not a vote from the entire left

The primary will choose between five candidates: Olivier Faure, Jérôme Guedj, and Ségolène Royal for the Socialist Party; Raphaël Glucksmann for Place Publique; and Emmanuel Maurel for the Republican and Socialist Left. Jean-Luc Mélenchon is not participating. However, during the debate on September 23, the question of relations with La France Insoumise (LFI) was a central issue. The primary will select a candidate within a defined political framework; it will not, on its own, resolve relations between all the left-wing forces.

Another important point: this is not a public vote organized by the state, nor is it a vote reserved solely for long-standing activists. According to the rules published by the organizers, supporters can participate by paying €15, or €10 at the reduced rate, under certain conditions. The vote is electronic, with the first round scheduled for October 9 and 10, 2026, and, if necessary, a second round on October 16 and 17. The registration deadline for the first round is October 5 at 11:59 p.m.; registration is open until October 12 to participate in the second round only. Presenting October 5 as the final deadline for voting, without this clarification, would therefore be inaccurate.

Two positions on LFI, and one question left open

In the editorial, Glucksmann advocates a clean break with LFI, including with a view to the legislative elections. Faure also criticizes Mélenchonism, but refuses to close the door to future electoral arrangements. This disagreement is not a semantic quarrel: it concerns candidacies, withdrawals, and the possibility of campaigning separately in the presidential election while simultaneously engaging in local discussions for the legislative elections.

The common rule for the primary is not as clear-cut as these stances. The Socialist Party indicates that candidates must commit to proposing a coalition with parties of the « democratic, ecological, and republican left, » in order to build, in particular, a program and a legislative agreement. This text sets out an ambition for unity; it demonstrates neither that an agreement with La France Insoumise (LFI) will be reached, nor that all forms of it will be excluded. The campaign is therefore focused on opposing political lines before an electoral agreement even exists to be considered.

What is the value of « around 12% »?

The order of magnitude cited for Raphaël Glucksmann in the editorial can be verified. In an Ipsos bva poll conducted from September 3 to 9, 2026, for Cevipof, the Jean-Jaurès Foundation, the Montaigne Institute, and Le Monde, he garnered between 11.5% and 13.5% of voting intentions in the first round of the presidential election, depending on the candidates tested. Olivier Faure obtained between 4.5% and 5.5% in the other scenarios. The report notably tests different configurations of centrist candidates: these percentages do not describe a predetermined election outcome.

The survey interviewed 13,060 registered voters online, using the quota method. For one scenario including Glucksmann, voting intentions were calculated based on 9,445 registered respondents who were certain to vote and had expressed a choice. Ipsos indicates, for its score of 11.5% in this scenario, an indicative margin of plus or minus 0.6 points; the institute specifies that the strict calculation of a margin of error applies to random samples, not quota polls. Most importantly, the survey indicates a preference in September 2026. It proves neither that Glucksmann will win the primary, nor that he will reach the second round in April 2027.

Seats are not the only metric for funding

The editorial links the preservation of Socialist seats to public funding for the party. The link exists, but it deserves more than a simplistic explanation. The law divides public funding into two equal parts: one depends on the votes obtained in the first round of the legislative elections by candidates affiliated with an eligible party; the other depends on the number of parliamentarians who declare their affiliation. Winning or retaining a seat can therefore matter, but votes and affiliations also count. One cannot deduce the amount the Socialist Party would receive from a simple discussion about withdrawals.

What the primary can — and cannot — decide

The editorial assumes a preference for a social-democratic candidate and invokes the history of left-wing coalitions. This is a political thesis, not a conclusion provided by the September figures. Conversely, the fact that a candidate refuses an alliance with LFI is not sufficient to establish how many seats their camp would obtain without it. The 2024 legislative elections took place in a context of dissolution of parliament and according to a constituency-based voting system; their results do not constitute a simulation of future legislative elections.

At this stage, the established fact is more modest, but decisive: five candidates must be chosen by a registered electorate according to the organizers’ rules, even though they disagree on alliances with LFI. The vote will designate a candidate. It will not transform a poll into an electoral result, nor a strategic disagreement into a legislative agreement.

Main source: Le Nouvel Obs – 2027 Presidential Election (www.nouvelobs.com)

Original article: See the original source

Author: Sylvain Courage