@Happinessisawarmcervix
Can those who understand the d’Hondt system here give me a primer on “splitting the vote”?
It seems to me that because Alba are only standing on the list that isn’t the case but KGM pushed the line quite hard in his interview with Salmond.
I can try...
D'hondt is meant to give an approximation of proportional representation. Effectively what happens is
- constituencies are grouped in to regions. Glasgow, for example, covers 9 constituency seats.
- the list results can only be calculated once the constituency results are known.
- the seats are then allocated one by one but the votes are divided by the seats already held by the party (+1)
So seat 1 in Glasgow you have the count of list votes for each party. SNP holds all 9 constituencies so their vote gets divided by 10. All other parties get divided by 1.
So last time the Glasgow votes for the list were
SNP 111101
Labour 59151
Conservative 29533
Green 23398
Lib Dem 5850
UKIP 4889
Due to the dividing this meant that Labour got list seat 1 - as SNP's 111k is divided by 10 so effectively becomes 11k
For seat 2, the denominator has changed. Labour is now divided by 2. That then makes the Labour vote for seat 2 29,575 so they win list seat 2 as well
When we get to seat 3, SNP is divided by 10, and Labour is now divided by 3. Everyone else is still 1. So the Tories get the next seat.
And so on until all 7 seats are allocated.
SNP at the moment only have a very small number (4?) of list seats because in most regions they end up in the same sort of situation as Glasgow - the vote is divided by such a high number that it's basically wasted as 11k is fewer than the number of votes needed to win a seat. So not giving SNP your second vote in Glasgow isn't really splitting it at the moment.
That's different in areas where SNP are not so dominant, like South Scotland. There votes for Alba/AFI/ISP do take away seats from SNP potentially, but an individual vote for the smaller parties is still effectively more valuable than one for SNP as SNP holds 4 constituency seats so the list vote starts out being divided by 5, whereas the smaller parties are divided by 1.
Does that make sense?