In this usage, party is a non-gender specific noun. People of a party are grouped by their like-position or views, so a party may have some men and some woman, but it may also have only men or only women - you do not know. Party (in a claim) is more like a 'they', but remember it is a noun and not pronoun, so do not say: "Party was in the affirmative", but rather, "The party was in the aff