Now, my frustration at the 'First Minister' saga is as nothing compared to the issue of spoiled ballot papers ;-((
Yes, it was high in the Scottish Parliament elections - that was the election under the Additional Member System (AMS) that had absolutely NOTHING whatsoever to do with STV-PR (as was used for the Local Authority elections).
As indicated earlier, the number of spoiled ballot-papers under STV was fairly standard - around 1.3% for Edinburgh Council as a whole, and as low as 0.6% in some Wards. The large increase in spoils came under AMS for the Parliament - 3.1% on the left-hand side of the paper and a shocking 5.1% on the right-hand (constituency) side of the paper ... that's 1 in 20 votes!!
I'm convinced that thousands and thousands of people voted on the left-hand side and thought "job done" and ignored the right-hand side ... the conjoining of the (previously) two ballot papers has been very badly managed. Again, nothing whatsoever to do with STV.
Whether I'm right or wrong on the detail, the solution is not to blame PR, but to change the Scottish Parliament electoral system from AMS to STV ... it should have been used from the start (in 1999) and if ever you needed evidence that it's a better system, just have a look in detail at the wide range of analysis that will inevitably come out over the coming weeks.
I sense that my Fairshare activity is about to be re-invigorated!