The two-party system is the political system in the economy under which two major parties of the same city or state rule over the political landscape consistently.
Because of the dominance of the two-party system, "third-party" candidates often struggle to raise both funds and the visibility of their campaigns.
When in a single landscape two stronger political parties rule dominantly over the candidates of other parties, known as third-party rulers, and candidates suffer problems in raising funds for their party and even face problems for the campaigns.
The other options are incorrect because the electoral, republican, and democratic do not get affected in their campaign during the two-party system.
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