But Trump’s relative weakness doesn’t mean he’s vulnerable. While Trump isn’t as strong as previous front-runners, his coalition has a similar shape. Take Virginia, a varied state where Trump won with 34.7 percent of the vote. The Washington D.C. suburbs aside, Trump won every region of the state, from exurban Northern Virginia and the central region of the state, to the vote-rich, eastern Tidewater and the Richmond metropolitan area. More important than that, however, is the ideological and socio-economic shape of his coalition. Trump won “very conservative” and “somewhat conservative” voters in Virginia, and placed second with self-described Republican moderates....