all-party

all-party (not comparable)

1. (politics) Composed of or involving members of all political parties in a country.
   • 2024 February 21, Christian Wolmar, “A 'tsar' needs to get to grips with High Speed 2... quickly”, in RAIL, number 1003, page 52:

     In particular, this all-party group of MPs has been scathing about the decision-making process, which has resulted in the Department of Transport having no ideas as to how "HS2 will operate as a functioning railway following recent changes".

• cross-party

• “all-party”, in Collins English Dictionary.