There is not a single populism but diverse populisms which respond to different local concerns. However, most populisms are configured around at least two of the following societal concerns: (1) a sense of economic insecurity and status anxiety; (2) xenophobic attitudes toward ‘Others’, in particular migrants and refugees; (3) disenchantment with incumbent political elites, combined with the perception that the establishment is arrogant, remote and insensitive to the needs of “real people”; (4) resentment against globalization, internationalism, and renewed support for nationalism (economic and other); (5) cultural and religious resentment, expressed in anti-modernist, anti-Enlightenment and anti-secularist views; and (6) impatience with liberal constraints upon government, and frustration with checks and balances that are viewed as institutional obstacles to “getting things done”. It is emphasized that in exploring the causes of successful populism one must focus not only on the "demand side" but also on the "supply side" of political populism.