'la vie du parti'
The life of the party is "le boute-en-train".
la vie est une fête.
a party is une fête in French.
French Communist Party was created in 1920.
French Social Party ended in 1940.
French Social Party was created in 1936.
French Popular Party ended in 1945.
Let's Party in French: faisons la fête
Canada's New Democratic Party is a social democratic party. Its conventions provide translation from English to French and French to English.
A hen party would be a 'sortie / fête / partie entre filles' in French. If going to a hen party specifically just before getting married, it can be called 'enterrement de vie de jeune fille' (literally 'the burial of a maiden's life')
"Party" in English is fête or soirée in French.
French Popular Party was created on 1936-06-28.