re: UK election exit polls are out

quote:

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Sinn Fein and the SNIP generally abstain though there's rumblings the SNIP may join in an anti-Tory block.

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There's a difference between these two. SNP swear in and vote on some things, they just abstain as a bloc on English issues. Sinn Fein don't even take their seats because it requires them to swear fealty to the queen, so they don't factor in the majority math at all.