This is important:

At Columbia University in New York this weekend the Progressive Policy Institute, which helped Bill Clinton and Tony Blair pioneer so-called third way politics in the 1990s, held a closed-door strategy session for congressional staffers that was designed to find ways of promoting growth.

“There is no question that the prevailing temper of the Democratic party is populist: strongly sceptical of what we like to call capitalism and angry about the perceived power of the monied elite in politics,” says PPI president and founder Will Marshall.

“But inequality is not the biggest problem we face: it is symptomatic of the biggest problem we face, which is slow growth.”

Al From, a leading figure of the centre left who chaired the Democratic Leadership Council during the first Clinton presidency, argues that a focus on inequality, though understandable after the banking crash, risks driving all candidates too far from policies that would promote growth.