Switzerland votes on proposal to cap population at 10 million

Swiss voters decide on Sunday whether to back a proposal to cap the country’s population in a referendum likened to Britain’s Brexit vote, which could have far-reaching consequences for the economy and Bern’s relations with the European Union.

Driven by concern about immigration, pressure on public services and housing, the constitutional change pitched by the right-wing Swiss People’s Party, or SVP, would mandate that the population must not exceed 10 million by 2050. Official projections put...