The Nz referendum was a) pick a flag in round 1 and b) decide if you really want to commit to the chosen flag in round 2. It was a sensible approach given that

The Nz referendum was a) pick a flag in round 1 and b) decide if you really want to commit to the chosen flag in round 2. It was a sensible approach given that the flag choices were so underwhelming that nobody wanted to change in the end. I guess it's a little different because you're voting for different things but I guess it's similar. Have a vote and then have the power to bail out.