Through political action, unions seek to enhance their political power. Why is political power so important? In a democratic society, the extent or magnitude of political power gives unions their voice and their seat at the great social negotiating table provided by democracy. The work of a democratic society is accomplished through a system of bargaining by those who possess political power. The greater the political power, the greater the bargaining power.
Political action is part and parcel of a free democratic society, and unions, as part of the democratic community, not only engage in political action, but are obligated to do so on behalf of their members and their interests.