The plural of third party is third parties.
Third party inspection companies | Third party inspection services
I would be first party, you would be second party, he or she would be third party.
Let's ask a disinterested third party. Maybe the third party will be more fun, tonight.
An independent third party is simply called an independent party. This is typically a political party that does not affiliate with the republican or democratic side.
Third Party
The Green Party is a third party and was formed in the US
the third party dies down
Are third party exemptions froze?
I am not induced by motives of pride, party, or resentment to espouse the doctrine of separation and independence . . .
A doctrine is a belief, or set of beliefs, held and taught by a Church, political party or other group.
Third Force Party was created in 1979.