Preferred to make a speech for those voting (10)
I believe the answer is:
electorate
'those voting' is the definition.
(voters in an election)
'preferred to make a speech' is the wordplay.
'preferred' becomes 'elect' (I've seen this before).
'to make a speech' becomes 'orate' (oratory is public speaking).
'elect'+'orate'='ELECTORATE'
'for' is the link.
(Other definitions for electorate that I've seen before include "Those qualified to vote" , "Voters as a whole" , "Those entitled to vote" , "Voters collectively" , "Voters in general" .)