Voting at the Eurovision Song Contest

A tie-break procedure was implemented after the 1969 contest, in which France, the Netherlands, Spain and the United Kingdom tied for first place. With no tie-breaking system in place at the time, it was determined that all four countries would be awarded the title; in protest, Austria, Finland, Sweden, Norway and Portugal did not participate the following year.

Question: has there ever been a tie in eurovision
Answer: yes