Rank and file members of the Garda Siochana are set to deliver a resounding vote of no confidence in the Garda Commissioner Drew Harris.
The result of a ballot of members of the GRA will be known just before midday.
Turnout is expected to exceed 70 per cent .
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The President of the Garda Representative Association Brendan O'Connor says proposed changes to rosters was the final straw for members of the force.