Several groups from the political right and left and the internet industry submitted about 60,000 signatures, 10,000 more than required, to challenge a decision by parliament taken last year.
“Most people we talked to during our campaign in all different parts of the country don’t want state interference in legal online offer. And they don’t want protectionism for domestic casinos,” said Andri Silberschmidt of the Young Liberals.
The youth chapter of the Young Greens argues that the law restricts the free use of the internet but also lacks sufficient prevention to help people addicted to gambling.
The Swiss betting, lottery and casino operators supporting the legal amendment have accused the critics of relying on financial support from foreign online casinos to collect enough signatures for the referendum.
Failure to block internet access to online money games would lead to millions of francs being spent outside Switzerland, the operators warned.