This would boost voter choice and break the two-party duopoly.

这会增加选民选择的机会，并打破两党垄断的地位。

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America is actually a 4-quarter nation trapped inside a rotting two-party duopoly.

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Under the stifling, consensus-based post-war system, based on a Social Democrat-People's Party duopoly, mentioning the issue smacked of bad manners.

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"One of the justifications for this campaign is to preserve and expand the right of third parties and independent candidates to challenge the two-party duopoly system, " Nader said.

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