Third parties may also help voter turnout by bringing more people to the polls. Third-party candidates at the top of the ticket can help to draw attention to other party candidates down the ballot, helping them to win local or state office.
A third party is someone who is not one of the main players in a business agreement or legal case, but who plays a minor role in it. You can direct your bank to allow a third party to withdraw funds from your account.
A "third-party source" is a supplier (or service provider) in a business transaction who is not directly controlled by either the seller (first party) or the customer/buyer (second party).
The most important role of third parties in politics is to introduce new ideas and institutions. "They innovate," according to Allan Lichtman, a history professor at American University in Washington.
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