The USA is the opposite of pluralistic. No third party has managed to build any serious political infrastructure at the local level and expand it regionally or

The USA is the opposite of pluralistic. No third party has managed to build any serious political infrastructure at the local level and expand it regionally or nationally. That's why there are so many frivolous third party candidates for president; they're desperate to get a percentage of votes that will generate some federal funding to sustain organizational growth, and running for President is one of the few ways to get sufficient attention for that nationally.