answer:They will not be listed. Last time (at least on my ballot) there were maybe five options. Each state has varying rules. Here are the rules for Oregon: “In Oregon, the secretary of state determines which candidates appear on the presidential primary ballot. A presidential candidate can also petition for placement on the primary ballot. An independent candidate can petition for placement on the primary ballot. This petition must contain signatures totaling 1 percent of the votes cast for president in the previous general election. An independent candidate can also be nominated by an assembly of 1,000 voters gathered in one place during a 12-hour period.”