Answer:
D. They draw votes away from each party
Explanation:
The third-party played an important role in a political system it can take away the famous votes from both parties and influence the result of the election.
If you see Historically the Third parties have promoted policies and concept that have then been Incorporated in mainstream Political system of United States of America, they bring those grassroots issues in mainstream politics which main parties might neglect, Third parties also Split the votes in an Elections and create the situation for Coalition government.
