“I think he makes a very fair point, which is that in these polls, our polls have shown it as well, that when you do a head-to-head with Hillary Clinton versus the field or Bernie Sanders versus the field, Bernie Sanders’ numbers are uniformly higher than Hillary Clinton,” Selzer said. “It certainly tells us that this is an electorate that is in a mood for a change.”

People do want change and the polls are reflecting that.

Source: Pollster on Sanders’ general election argument: He ‘makes a very fair point’ – POLITICO