"Speaker poor," a Tory admits (6)
I believe the answer is:
orator
'speaker' is the definition.
(orator is a kind of speaker)
'poor a tory admits' is the wordplay.
'admits' says the answer is hidden in the clue.
'ORATOR' is hidden within 'poor a tory'.
(Other definitions for orator that I've seen before include "A gifted public speaker" , "A Rhetorical talker or speech-maker" , "Eloquent public speaker" , "One making one across" , "A fluent public speaker" .)