Labour's foreign affairs spokesman will next week call on former work colleagues at the UN. Having worked during various crises in Iraq, Jordan, Israel, the Palestinian territories, Somalia, Sierra Leone, Liberia, and Rwanda, he will also call on several permanent representatives to press New Zealand's case, as well as small island states.
"New Zealand being on the Security Council is a very big deal," he said. " It's the possibility of having New Zealand values and New Zealand's sense of fair play being able to be projected on a world stage, and sitting down with the big players and having an equal voice with them."
Council bids have a long gestation. In 2004, former PM Helen Clark launched New Zealand's bid for the vote in 2014, likely to be in mid-October, for a seat in 2015 and 2016.
Others standing are Spain and Turkey.
Mr Shearer said the visit next week arose from an invitation by Foreign Minister Murray McCully and both believed it should remain a bipartisan bid.