American guitarists have the last word over vote (5)

I believe the answer is:

axmen

'american guitarists' is the definition.
(ax is a US term for a guitar)

'the last word over vote' is the wordplay.
'the last word' becomes 'amen' (last word in a prayer).
'over' indicates putting letters inside.
'vote' becomes 'x' (how votes are marked).
'amen' enclosing 'x' is 'AXMEN'.

'have' acts as a link.

I've seen this clue in The Guardian.

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