On 18 June 2017, the citizens of Moutier decided by 51.72% (2,067 yes to 1,930 no, on a record 89.7% turnout) to leave the canton of Bern and join the Republic and Canton of Jura. By 137 votes, the small town settled what forty years of the «Jura Question» had failed to resolve.
The backstory goes to the plebiscites of 1974-1975: the northern Jura then founded the canton of Jura, but Moutier narrowly stayed Bernese. The town has lived split between autonomists and pro-Bern loyalists ever since, through perpetually tight municipal elections. In 2015, Bern and Jura agreed — a rarity in Switzerland — to let the municipality alone decide its cantonal allegiance.
The intense, heavily covered campaign pitted francophone, Jurassian identity against Bernese roots: reportedly gentler taxes on the Jura side, accusations that Bern was neglecting the town, the future of Moutier’s hospital, schools and cantonal services. Federal observers watched over the ballot.
Sixteen months later came the twist: in November 2018, the prefect of the Bernese Jura annulled the vote for irregularities; Bern’s administrative court confirmed in August 2019. Though legally erased, that first yes remained the turning point that made the 2021 re-vote inevitable — and, at the end of the road, Moutier’s actual transfer to Jura on 1 January 2026.
▲ Result — ACCEPTED Yes: 51.72% — 2,067 votes to 1,930 (a 137-vote margin). Turnout: 89.7%. Municipal ballot of 18 June 2017. | ▼ Then ANNULLED Invalidated on 5 November 2018 by the prefect of the Bernese Jura for irregularities; definitively confirmed on 23 August 2019 by Bern’s administrative court. |
Key players
▲ Yes camp (pro-Jura) • «Moutier, ville jurassienne» committee, spokesman Valentin Zuber • Autonomist majority on the town council, around mayor Marcel Winistoerfer (Christian Democrat) • The Jurassian autonomist movement, backed by the Jura cantonal government | ▼ No camp (pro-Bern) • Pro-Bern committee «Moutier-Prévôté» • SVP of the Bernese Jura and pro-Bern politicians, from whose ranks the appellants came • The canton of Bern, keen to keep its largest town in the Bernese Jura |
Arguments and verdicts — 9 years on
▲ Arguments FOR (Yes camp) Jura’s tax regime will favour most Moutier residents. «On a gross income of 50,000 francs, a single person pays about 6,200 francs in tax in Moutier, against nearly 5,400 in Porrentruy.» — Expert comparisons cited in the campaign (RTS) ✓ Argument confirmed The Jura tax framework that took effect on 1 January 2026 lowers the tax burden for most Moutier taxpayers, especially low and middle incomes. Jura’s finance minister Rosalie Beuret Siess also confirmed that the town’s arrival would entail no cantonal tax increase. Source: jura.ch; RFJ, 25 September 2024; moutierdanslejura.ch Only joining Jura will finally close the Jura Question. «We expect nothing more from Bern.» — «Moutier, ville jurassienne» committee, 2017 campaign ✓~ Partly confirmed The transfer did happen: a confirming second vote in 2021, an intercantonal concordat signed in 2023, approved by landslide in both cantons in 2024, and effective transfer on 1 January 2026. The Jura Question is institutionally settled — but it took nine years, one annulled vote and a re-run, and the town remains politically split. Source: Federal Office of Justice (Jura dossier); RTS; sta.be.ch | ▼ Arguments AGAINST (No camp) Moutier’s hospital is only safe with Bern; Jura will hollow it out. «The hospital site’s future is threatened by the proximity of the Delémont hospital.» — Pro-Bern camp, 2017 campaign ✓~ Partly confirmed The fear partly materialised: Bern’s hospital planning granted the Moutier site 25 service mandates; the first draft of Jura’s hospital list kept only 5, raised to 11 after protests. Years on, the hospital file remains the most fragile point of the transfer. Source: RTS, 11 July 2022; Le Quotidien Jurassien; RJB Outside Bern, Moutier will lose the backing of a large canton — schools, economy, finances. «Moutier has everything to lose by leaving Switzerland’s second-largest canton.» — «Moutier-Prévôté» committee, 2017 campaign ✗~ Partly refuted The Bern-Jura concordat methodically organised continuity: schooling, justice, administration, taxation, clean-up of polluted sites. Jura’s 2026 budget absorbs the town without a tax shock. Some files did require ad-hoc fixes — notably the 65-million-franc shortfall in federal equalisation, compensated by contributing cantons over five years. Source: Concordat on the transfer of Moutier (jura.ch); Le Temps, December 2025; RTS |
Factual record · 9 years on (2026)
1 Confirmed | 2 Partly confirmed | 1 Partly refuted | 0 Refuted |
| ! | The vote is annulled. On 5 November 2018, prefect Stéphanie Niederhauser invalidated the ballot: «inadmissible» propaganda by the municipal authorities and «electoral tourism» (some forty dubious residency cases). Bern’s administrative court definitively confirmed on 23 August 2019. |
| ✓ | The re-vote confirms and amplifies. On 28 March 2021, under reinforced federal supervision (18 observers from the Federal Office of Justice), Moutier said yes again — 54.9% (2,114 votes to 1,740). No appeal was lodged. |
| ✓ | The concordat seals the transfer: signed on 24 November 2023 by Bern and Jura, approved by both parliaments, then endorsed at the ballot box on 22 September 2024 (72.9% in Jura, 83.2% in Bern). |
| ✓ | 1 January 2026: Moutier and its roughly 7,300 inhabitants officially become Jurassian — the first territorial change of its kind since the canton of Jura was created in 1979. |
| ~ | The hospital remains the sore point: fewer service mandates than under Bernese planning (25 → 5, then 11 after protests), with the hospital list revised before the transfer. Both camps’ hospital promises remain under watch. |
18 June 2017 will be remembered as recent Swiss democracy’s most instructive Pyrrhic victory: a historic yes, won by 137 votes, then erased by the courts over very real irregularities — official propaganda and a dubious electoral register — without the people’s verdict ultimately changing.
On the campaign arguments, the autonomist camp comes out broadly vindicated: Jura’s taxes proved gentler for most taxpayers, and the transfer was eventually carried out within an exemplary negotiated framework. The pro-Bern camp saw its hospital fear partly validated — Jura’s hospital list first slashed the site’s mandates before correcting course under pressure.
Above all, the episode says something about institutions: a municipal vote could be annulled, re-run, verified, then executed through an intercantonal concordat approved by two cantonal electorates. The Jura Question — half a century of passion — was extinguished not in the streets but through a succession of ballots. That, quietly, is the real lesson of 2017.