Even though they don’t often win elections, how can third parties still play a role in our two-party system? - civics

A high-level overview of the barriers to electoral success facing third-party and ... win a small number of legislative seats even if a mainstream party wins most seats. a two-party system in which candidates from the two major political parties win. voters who identified with a third-party issue will often vote for a major party

i believe that the answer to the question provided above is that the role of campaign committees is to act as a bridge between state and local campaigns.