A system with two distinct political parties, or involving both parties equally; another term for a two-party political system.
From bi- (two) + party (political organization). This is a simpler, more direct formation than 'bipartisan,' combining the two root words without the -san suffix.
Most stable democracies are biparty systems—the U.S., U.K., and Australia all thrive with mainly two major parties competing for power!
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