Now the result depends entirely on 'don't knows'
I was only "surveyed" once ever myself. Some years ago, a nervous young man with a yellow clipboard approached me in a supermarket car park and asked me a series of questions about potatoes. Happily, I had no difficulty sharing my own very strong views on the subject. The young man's form had a "don't know" box for most answers. I'm proud to tell you that he did not tick it once for me.
But Friday's election is entirely another matter. With five days left, most of us can agree it has been a lacklustre contest - but we must equally agree, it is still impossible to figure the outcome. And we have not seen that level of uncertainty, this late in an election campaign, in our lifetimes.
Alas, right now, we just "don't know".