A sign sits in a field, on the day of the vote on a plan backed by the right-wing Swiss People's Party (SVP) to limit population growth to 10 million inhabitants, near Hundwil, Switzerland, June 14, 2026. [Photo/Agencies]

The referendum is proposing a a limit of 10 million people until 2050 and has divided the country, being dubbed by some as a "Swiss Brexit".

Switzerland's upcoming referendum on capping its population at 10 million raises significant implications for immigration and EU relations.