Politics in a liberal, democratic democracy cannot long proceed or survive simply by inertia; instead they must be constantly fed by people who are engaged in the political process and who share some of the basic values necessary for such a democracy to thrive. None of these values depend in any way upon religion or theism; this means that they necessarily 'godless' - that they exist independently of people's religions and gods.
Read Article: Godless Political Values: Importance of Godless Values to Modern Democracy