In middle of power cut Republican gets shock (7)
I believe the answer is:
outrage
'shock' is the definition.
(synonyms)
'in middle of power cut republican' is the wordplay.
'in middle of' indicates putting letters inside.
'power cut' becomes 'outage' (I've seen this before).
'republican' becomes 'r' (abbreviation).
'outage' placed around 'r' is 'OUTRAGE'.
'gets' is the link.
(Other definitions for outrage that I've seen before include "furious reaction" , "Incense and offend" , "Very angry reaction" , "Strong reaction of anger or indignation" , "Gross affront to decency" .)