GENEVA — Swiss citizens cast their votes Sunday on a controversial measure that would place a hard ceiling on the country’s population at 10 million people, an effort led by the nation’s dominant right-wing political party.
The Swiss People’s Party, which holds more seats in parliament than any other party, has spent years stoking concerns about immigration — particularly the steady flow of workers arriving from neighboring European Union countries. The party is behind what it calls the “sustainability initiative,” arguing that population growth has put serious strain on Switzerland’s housing, infrastructure, social services, natural resources, and overall quality of life.
But opponents of the measure say it would do more harm than good. They argue that the wave of immigration over the past several decades has been a net positive, supplying skilled workers to key industries including healthcare, finance, pharmaceuticals, and technology. There are also concerns that passing the measure could damage Switzerland’s relationship with the EU, which is the country’s largest trading partner.
Switzerland’s federal government and parliament both stand in opposition to the initiative.
If voters approve the measure, the Swiss government would be required to take steps to keep the population below 10 million by the year 2050. Should the population hit 9.5 million before that deadline, the government would be compelled to tighten rules around asylum seekers, family reunification, and residency permits. It could also be forced to abandon Switzerland’s agreement with the EU allowing people to freely live and work across their shared borders.
A recent survey from polling agency gfs.bern indicated the vote was shaping up to be a tight race.
Switzerland operates under a direct democracy system that allows citizens to weigh in on policy decisions through referendums, which are typically held four times each year. The majority of votes are submitted by mail, with in-person polling closing at noon local time on Sunday.
According to data from the Organization for Economic Cooperation and Development, 32% of Switzerland’s population was foreign-born as of 2024 — a share exceeded only by Luxembourg and Australia among the group’s 38 member nations.
Since Switzerland and the EU opened their borders to one another’s citizens in 2002, Switzerland’s population has climbed 23%, reaching 9.1 million by the close of last year. Over that same stretch, the country’s economic output grew by 24%, according to government figures.
Immigration has been a recurring flashpoint across Europe, where countries face the dual pressures of aging populations and rising anti-foreigner sentiment. In Switzerland’s case, however, most of the foreign-born residents are fellow Europeans — a distinction from other parts of the continent where concerns tend to focus on migrants from developing nations.
Swiss voters have confronted immigration-related questions at the ballot box many times over the past 50 years. Only one such vote has succeeded — a 2014 referendum titled “Against mass immigration” — which squeaked through after campaigners raised alarms about overpopulation and a growing Muslim presence in the country.
Experts in Switzerland note that while many countries place limits on who can immigrate, no nation has ever gone so far as to vote on capping its total population size.
