In recent years, major parties' decline in terms of their share of the vote has been greater in countries with what kind of electoral system?

Question

Quizplus · Accepted Answer

Proportional representation electoral systems tend to lead to a greater diversity of political parties, making it harder for any one party to gain a significant majority of the vote. This can lead to a decline in major parties' share of the vote as smaller parties gain more representation. First-past-the-post and two-and-a-half party systems tend to favor the dominance of two major parties, while clientelism refers to a type of political system based on patronage and favors rather than a specific electoral system.

In Recent Years, Major Parties' Decline in Terms of Their