Is Trump’s electoral-college advantage slipping?

Midwestern voters have been just barely more likely than the average American to sour on the president recently

The electoral college is an anti-majoritarian institution that enshrines America’s history of slavery, gives small but durable advantages to candidates who poll better in exurban and rural areas and disproportionately magnifies the voices of people who just so happen to live in close states.

In 2016, this unique and antiquated mode of electing president…