two-partyism

two-partyism

the condition in a nation of having two political parties with equal voting strength and little opposition from other parties.
See also: Politics
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Thus, Duverger (1955) saw a tendency toward two-partyism in electoral systems employing single-member districts, while Reed (1991) saw a tendency for there to be four viable candidates in three-member districts, five viable candidates in four-member districts, and six viable candidates in five-member districts.
12) At this point, the post-war view of politics began to change rapidly, but not in favour of a more critical opinion of two-partyism, perhaps because the attention of the commentators was being diverted elsewhere.