In the 2008 Democrat presidential nomination campaign, Hillary beat Obama among whites and among Hispanics, but he crushed her among blacks and ultimately ended up as president for eight years as a consequence.
This time around Hillary is the new Obama and Bernie Sanders is the new Hillary. These Nevada entrance poll results illustrate the winning strategy she gleaned from Obama quite well:
In today's Democrat party, winning the presidential nomination requires winning blacks. They're as close to monolithic as it gets in American politics, so a Democrat who can keep it competitive among non-blacks just needs to get the black nod and victory is almost assuredly hers.
This presents an as yet unexploited opportunity for a savvy Republican pol to point out in front of a national audience. Its salience will be bad news for the party of the Coalition of the Fringes.