5 points

NBC News: “From November 2016 to November 2017 there was a 5-point drop in the number of people who call themselves Republicans, from 42% to 37%, according to Gallup. In that same time, the number of people identifying as Democrats stayed flat at 44%. … Do the math and a 2-point edge for the Democrats in party identification, 44% to 42%, has been pushed to 7 points, 44% to 37%, in just one year. That’s getting up into the area that may be a concern for Republicans in the 2018 midterms, where a big swing in party allegiance could lead to a swing in House and Senate seats.”

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