Ninety-five percent of self-identified Republican primary voters are white. That’s among the findings of the latest Wall Street Journal-NBC News poll, as well as that 74% of all Americans age 18 and older are white, a figure that tracks with census data. This means that heading into 2016, the Republican primary electorate is dramatically less diverse than the country overall. The GOP primary electorate is even less diverse than the country was in 1916, when 91% of the voting-age population was white, according to historical census data.

Nominating a candidate for president from an electorate that is less diverse than America was a century ago, when voting rights were limited to men ages 21 and over, is not good for the Republican Party or its eventual nominee.