Tweet from Republican enthralled by golf shot (5)
I believe the answer is:
chirp
'tweet' is the definition.
(thesaurus)
'republican enthralled by golf shot' is the wordplay.
'republican' becomes 'r' (abbreviation).
'enthralled by' means one lot of letters goes inside another ('enthral' can mean 'capture').
'golf shot' becomes 'chip' (chip is a kind of golf shot).
'r' going inside 'chip' is 'CHIRP'.
'from' acts as a link.
(Other definitions for chirp that I've seen before include "Grasshopper's noise" , "Sound made by small bird" , "Tweet" , "Twitter" , "Short sharp tone of grasshopper" .)