Adding background...
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A defeat for Renzi, who proposed the vote and initially pledged to resign if the result didn’t go his way,
could lead to early elections and a rise in support for the populist Five Star Movement. This party has pledged to carry out a referendum on whether Italy should stay in the euro area. Some investors are already predicting the end of the European Union, let alone the single currency. “We think the EU will break and that Italy will leave the euro,†said Jim Smigiel, a U.S.-based money manager at SEI Investments Co. “Until a while ago this was just unthinkable, implausible, but we’re starting to see the wheels in motion, at the very least.â€
https://www.bloomberg.com/news/articles/2016-11-28/why-italian-vote-unlikely-to-mean-swift-euro-exit-quicktake-q-a