What is one role that third parties have played within the American political party system? A) spoiled the election for one of the two major parties B) overthrown the government and instituted a new regime prevented major parties from adopting the ideas of their supporters D) campaigned for and won two presidential elections in the 20th century

What is one role that third parties have played within the American political party system? A) spoiled the election for one of the two major parties B) overthrown the government and instituted a new regime prevented major parties from adopting the ideas of their supporters D) campaigned for and won two presidential elections in the 20th century