Holding over detailed March vote shows inconsistency (7)
I believe the answer is:
paradox
'inconsistency' is the definition.
(thesaurus)
'holding over detailed march vote' is the wordplay.
'holding' indicates putting letters inside.
'over' becomes 'o' (cricket abbreviation).
'detailed march' becomes 'parad' (I can't justify this - if you can you should believe this answer much more).
'vote' becomes 'x' (how votes are marked).
'parad'+'x'='paradx'
'o' put into 'paradx' is 'PARADOX'.
'shows' acts as a link.
Can you help me to learn more?
(Other definitions for paradox that I've seen before include "Statement which seems contradictory but is true" , "self-contradiction" , "Anomaly" , "Seemingly sound, though self-contradictory, statement" , "Apparently contradictory statement" .)