第だい三さん勢せい力りょく

noun

third force; third power

Refers to a political or social group that is neither of the two main opposing forces, often emerging as an alternative in elections or movements.

• 選せん挙きょでは第だい三さん勢せい力りょくが議ぎ席せきを伸のばした。

  In the election, the third force gained seats.

• 二に大だい政せい党とうに対たい抗こうする第だい三さん勢せい力りょくの結けっ集しゅうが進すすんでいる。

  The rallying of a third force to oppose the two major parties is progressing.