Pretend Nationalist is out of race (3)
I believe the answer is:
kid
'pretend' is the definition.
(I've seen this before)
'nationalist is out of race' is the wordplay.
'nationalist' becomes 'n' (abbreviation in politics).
'is out of' suggests deleting specific letters ('out of' can mean no longer having).
'race' becomes 'kind' (I've seen this in other clues).
'kind' with 'n' taken away is 'KID'.
(Other definitions for kid that I've seen before include "Pretend" , "In slang, young child or goat" , "Playfully deceive" , "Sort of gloves" , "Suede" .)