Like old parliament game joined by politician (4)
I believe the answer is:
rump
'like old parliament' is the definition.
'rump' can be an answer for 'parliament' (I've seen this before). I'm unsure of the 'like old' bit.
'game joined by politician' is the wordplay.
'game' becomes 'RU' (rugby union).
'joined by' says to put letters next to each other.
'politician' becomes 'MP' (Member of Parliament).
'ru'+'mp'='RUMP'
Can you help me to learn more?
(Other definitions for rump that I've seen before include "Hind part; small remnant" , "Cut of meat from the rear" , "Hind part of body" , "The buttocks or hind-quarters" , "Depleted legislators" .)