Tackle some vote manipulating (7)
I believe the answer is:
rigging
'manipulating' is the definition.
('rig' can be a synonym of 'manipulate')
'tackle some vote' is the wordplay.
'tackle' becomes 'rig' (I've seen this in another clue).
'some vote' becomes 'ging' (I can't justify this - if you can you should believe this answer much more).
'rig'+'ging'='RIGGING'
Can you help me to learn more?
(Other definitions for rigging that I've seen before include "Ropes, etc, on a sailing ship" , "vote-manipulating" , "Fraudulently fixing" , "Sailing ship's ropes" , "Ship's ropes or chains" .)