Apparently true conservative Republican can be taken in (8)
I believe the answer is:
credible
'apparently true' is the definition.
(something credible can be believed)
'conservative republican can be taken in' is the wordplay.
'conservative' becomes 'C' (abbreviation commonly used in UK politics).
'republican' becomes 'r' (abbreviation).
'can be taken in' becomes 'edible' (that which can be eaten or taken into the body).
'c'+'r'+'edible'='CREDIBLE'
(Other definitions for credible that I've seen before include "Capable of being believed" , "Worth buying" , "Within the bounds of belief" , "Convincing" , "Possible to believe" .)