NATE COHN REVEALS DONALD TRUMP’S SECRET WEAPON:

Mr. Trump’s blue-state appeal is a little hard to explain. It’s well established that he fares best among less educated voters. Yet his strongest performance so far wasn’t in Mississippi, where he got 47 percent of the Republican vote, but in Massachusetts, a famously liberal state, where he won 49 percent of Republican voters.

His appeal in historically Democratic areas is a reflection of strength among new Republicans — whether they be white Southerners or white Roman Catholics and working-class voters in the North who would have had no place in the Republican Party a half-century ago.

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“Blue-state Republicans” were abandoned by the Democrats, and then taken for granted by the GOP. Hillary Clinton had to have been hoping to win them back over like Bill did in ’92 and ’96, but Trump might just have a lock — assuming he’s the nominee.