Which of the following roles is not considered a party office?

The role of a member of a school board is typically not considered a party office because it is primarily a local governmental position focused on the administration and policy of the public school system. School board members are elected to represent the interests of the community in the education system rather than to serve a specific political party's agenda.

In contrast, roles like a delegate to a national political convention and an alternate member of a local committee are directly tied to political party activities and governance. These positions are designed to represent party interests, shape party policies, and engage in the party’s electoral strategies. Similarly, a nominee for local council is someone who is put forward by a party to run in elections, making it a distinctly party-associated role. Therefore, the distinction lies in the nature of the responsibilities and allegiances tied to political parties versus independent governmental duties related to the school board.