Which method is NOT used by states to select delegates for the party convention?

The state ballot method is not a recognized method used by states to select delegates for party conventions. Typically, the methods include primary elections, caucus methods, and state presidential primaries, which are all structured events where voters either cast ballots or participate in discussions to select delegates who will represent them at the national party conventions.

Primary elections involve voters directly voting for their preferred candidate, while caucus methods generally require individuals to gather and discuss in groups to express their support for specific candidates. The state presidential primary specifically refers to the method whereby states conduct elections to choose delegates based on the votes for presidential candidates.

In contrast, a state ballot method does not exist as a distinct process for delegate selection and therefore does not align with the established methods used in the political context of selecting convention delegates.