Winner-take-all is the basic driver of having a two-party system. But in the UK you could have districts where the two parties are Labor and Conservative, and others where they're Labor and Liberal Democrat, and there's nothing obviously driving further simplification. In the US we might have that at the House level... but then some state with three parties among its districts would be having statewide elections for Senate (and governor, and EC) which favors just two big parties at that level. That's the main thing I was thinking of.
Winner-take-all mayoral races for cities, too.
And state legislative districts might overlap multiple Congressional districts, though I'm not sure what effect that'd have.
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yati
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Date: 2008-10-29 02:59 am (UTC)Winner-take-all mayoral races for cities, too.
And state legislative districts might overlap multiple Congressional districts, though I'm not sure what effect that'd have.