Awful trouble with EU showing no love for diehard Tory? (4,4)
I believe the answer is:
true blue
'diehard tory?' is the definition.
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for true blue that I've seen before include "unlike a Tory MP at election time!" , "Loyalist" , "Firmly loyal in cerulean manner?" , "Completely faithful to one's principles, straight azure" , "Right-winger" .)