Which of the following has not been a factor encouraging the continued dominance of Democrats and Republicans as the nation's two major parties?

Question

Quizplus · Accepted Answer

Proportional representation is a voting system used in some countries where political parties obtain the number of seats in the legislature based on the percentage of votes they received in the election. The United States does not use this system, so it cannot be a factor that has encouraged the continued dominance of the Democrats and the Republicans. A, B, C, and D are all factors that have contributed to the continued dominance of the two parties.

Which of the Following Has Not Been a Factor Encouraging