Hey Soz, sorry about that - I somehow hadnt picked up on that.
Also, I just clicked the Comments section to the Pollster item with the tables above, and someone there had already picked up the no-racial-slippage thing as well - if I'd seen that it would have saved me some time.
On the other hand, the Comments section
also has a brilliantly quirky analysis about the historical correlation of candidates having moustaches and them being less likely to be elected (see comment by Gary Kilbride | November 9, 2006 2:17 AM)