The Swiss have this morning been back to the polling stations 12 Feb
Voting has now closed and the first results are due later this afternoon.
Being born in Switzerland does not guarantee citizenship. Non-Swiss residents usually have to wait around 12 years before applying.
Tests and government interviews are also required but the new proposal would allow third-generation immigrants to avoid some of that bureaucracy. It would directly affect those born in Switzerland, whose parents and grandparents also lived in the country permanently.
More than half of third-generation residents in Switzerland are descended from Italian immigrants. Other large groups have roots in the Balkans and Turkey.
Over the past 30 years, three previous attempts to relax the rules have been defeated. This time, opinion polls suggest the vote on Sunday will be close. Big cities back the idea, while more conservative rural areas oppose it.
The BBC has more here
Immigration/citizenship firmly on the agenda right now and this latest vote will have populist groups looking to gain as much leverage as possible.
What do our Swiss readers make of it all ? And will it have any impact on the franc in your pocket?
