Third parties refer to individuals or groups that are not directly involved in a situation or transaction but may influence or be affected by it. In politics, third parties are political parties other than the two dominant ones, such as the Democratic Party and the Republican Party in the United States. They can provide alternative viewpoints and options for voters. In business, third parties often act as intermediaries, such as vendors, suppliers, or contractors. They can facilitate transactions, provide services, or help manage relationships between primary parties. Their involvement can enhance efficiency and broaden the scope of operations.