Touched by journalist supporting unlimited offer during performance (8)
I believe the answer is:
affected
'touched' is the definition.
(affecting is a kind of touching)
'journalist supporting unlimited offer during performance' is the wordplay.
'journalist' becomes 'ed' (short for editor).
'supporting' says to put letters next to each other (in a down clue, some letters go below others).
'unlimited' indicates the central letters (discard the edges or 'limits' of the word).
'during' means one lot of letters goes inside another.
'performance' becomes 'act' (act is a kind of performance**).
The central letters of 'offer' are 'ffe'.
'ffe' inserted into 'act' is 'affect'.
'ed' put after 'affect' is 'AFFECTED'.
'by' acts as a link.
(Other definitions for affected that I've seen before include "La-di-da" , "Deeply moved" , "Pretended; artificial" , "Pretentious, designed to impress" , "Stirred" .)