Final answer:
The negotiation tactic where an issue of little importance is portrayed as significant in order to gain leverage is known as the bogey.
Step-by-step explanation:
The hardball negotiation tactic where negotiators pretend an issue of little or no importance to them is quite important is known as the bogey. This tactic is part of political bargaining where one party may project an issue as a major concern to extract concessions from the other party, even though that issue may not be of genuine concern to them. By doing this, negotiators aim to achieve a more favorable outcome for their side of the negotiation, using the apparent importance of the issue to leverage other more valuable concessions.