I was reminded of this:
In 2003 Anna Lindh pro EU Swedish foreign minister was stabbed and killed just days before Sweden was set to vote on adoptung the euro
After she died, they cancelled campaigning "out of respect".
Here's CNBC on the "similarities":
The fatal attack on a pro-European British lawmaker just a week ahead of the key Brexit referendum vote has shaken politicians and voters across the U.K.
While this is the first time in nearly a quarter of a century that a U.K. politician has been murdered, the case bears startling similarities to the assassination 13 years ago in Sweden of pro-EU Anna Lindh.
Days before Sweden would vote on whether to join the euro in 2003, a 46-year-old lead campaigner for Sweden's to adopt the euro was stabbed while shopping in a Stockholm department store. She had been shopping for clothes for a euro zone debate scheduled that evening. The next day, on September 11, Social Democratic foreign minister Lindh died from her injuries.
Both sides of the Swedish political campaign suspended their activities following the news, with TV ads campaigns cancelled and billboard and print media ads withdrawn.
On the following Sunday, Swedes rejected proposals to adopt the common currency.
Back in Britain, the death of Labour member of parliament (MP) Jo Cox has set a similarly solemn tone around the otherwise raucous Brexit debate.
The 41-year-old was shot in the small town of Birstall in the north of England while on her way to meet with constituents in a nearby library Thursday afternoon.
The attack on Lindh was carried out by "lone nut" Mijailo Mijailovic who claimed he hated politicians and was high on the hypnotic drug Flunitrazepam.
British police arrested 52-year-old "lone nut" Tommy Mair for the attack on Cox.