Rick Pildes, in the Wash Post:
Three major elections on the same Sunday in June — in France, Colombia and Spain — tell the fundamental story of democracy in our era: the continuous disaffection with government, the collapse of traditionally dominant parties and figures, and the constant search for alternatives — which is quickly followed by yet more disaffection and the search for yet other alternatives. This is no longer a narrative of dysfunction distinctive to one country, if it ever was. The Conservative Party in Britain is now scrambling to find a new prime minister; the government in Italy is near collapse. The nature of political authority has fundamentally changed. Political power has become fragmented, as voters abandon traditional parties and turn to upstart, insurgent parties or independent, free agent politicians from across the political spectrum.
In multiparty democracies, such as the three that held elections last month, the fragmentation of political power makes it more difficult to form governments, causes those governments to be fragile and prone to collapse, and weakens their capacity to deliver effective policies. Politics in the United States, with our well-entrenched two-party system, are nonetheless being shaped by similar forces — although here fragmentation means the Democratic and Republican parties are torn by internal factional conflicts that party leaders struggle to surmount.