Original sentence: "Third party" is a term used by some in the United States to mean any of dozens of other parties--besides the Republican and Democratic parties
Edited sentence: "Third party" is a term used by some in the United States to mean any of dozens of other parties--besides the Republican and Democratic parties--even though they are not all tied for third place.That innumerate term ghettoizes those parties and tells the public not to bother voting for them, as the only people allowed to win are the Republican and Democratic party candidates