Deal with vote against covering face (8)
I believe the answer is:
confront
'deal with' is the definition.
(confronting is a kind of dealing with)
'vote against covering face' is the wordplay.
'vote against' becomes 'con'.
'covering' means one lot of letters go next to another (on top of in down clue).
'face' becomes 'front' (synonyms).
'con'+'front'='CONFRONT'
(Other definitions for confront that I've seen before include "Oppose head-on" , "Meet face to face with" , "Face up to (a problem)" , "Face in opposition" , "Square up to" .)