Election (4)
(Other definitions for snap that I've seen before include "Crack; bite" , "on the spur of the moment" , "Sudden break" , "Break sharply - a simple card game" , "Informal photograph" .)
'election' is the definition.
(vote can mean an election or poll)
This is all the clue.
(Other definitions for vote that I've seen before include "Cast a ballot" , "Indicate choice in an election" , "Register one's choice" , "Make election choice" , "Mark an 'X'" .)
'election' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for poll that I've seen before include "Number of votes recorded at election" , "coverage of vote for 9d > [WHISTLE BLOWER]" , "Clip" , "Head - election" , "Head; register of voters" .)
'election' is the definition.
(thesaurus)
This is all the clue.
(Other definitions for voting that I've seen before include "making one cross?" , "polling process" , "Casting a ballot" , "Taking part in poll" , "Taking part in election" .)