Liberal, in a loud voice, gets excited (8)
I believe the answer is:
aflutter
'excited' is the definition.
(similar in meaning)
'liberal in a loud voice' is the wordplay.
'liberal' becomes 'l' (abbreviation).
'in' is an insertion indicator.
'loud' becomes 'f' (short for forte - 'loud' in music).
'voice' becomes 'utter' (I've seen this before).
'a'+'f'+'utter'='afutter'
'l' inserted into 'afutter' is 'AFLUTTER'.
'gets' is the link.
(Other definitions for aflutter that I've seen before include "trembling" , "Agitated - excited (eg in anticipation)" , "in excited state" , "Nervous, twitchy" , "is rather nervous" .)