Crossword Genius

Confused elector's choice could block decision? (4)

Ross

I believe the answer is:

veto

I'm a little stuck... Click here to teach me more about this clue!

'block decision?' is the definition.
'veto' can be an answer for 'block' (to veto is to block a decision or action). I am not sure about the 'decision?' bit.

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for veto that I've seen before include "Refusal to assent" , "Don't allow" , "Embargo" , "Vote that blocks a decision" , "Blocking vote" .)

I've seen this clue in The Irish Times.
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