https://www.theatlantic.com/politics/archive/2017/01/democrats-senate-2018-2020/511859/
"It’s possible that some states may be slipping away from Democrats. Wisconsin, Michigan, and Pennsylvania along with Iowa and Minnesota are all states that have “watched their Democratic leans evaporate over the last thirty years,” Brandon Finnigan, the director of the non-partisan election site Decision Desk HQ, wrote in an e-mail. “This doesn’t mean a Democrat won’t win these states ever again, or that Republicans have a lock on them. But they’ve red-shifted,” he said, adding that despite the state’s track record of voting for Democrats in presidential elections, “it’s just a matter of time” before even Minnesota breaks for the Republican candidate in a presidential race.
It won’t necessarily be easy for Democrats to win back voters that once supported Obama and then voted for Trump. In some parts of the country, “voters stampeded to Trump. They didn’t just move to Trump. They ran to Trump,” Finnigan said in an interview, adding: “It would take a massive event for them to come stampeding back in a cycle.” That dynamic could frustrate Democrats hoping to swiftly reverse the losses the party sustained in the presidential election."
"It’s possible that some states may be slipping away from Democrats. Wisconsin, Michigan, and Pennsylvania along with Iowa and Minnesota are all states that have “watched their Democratic leans evaporate over the last thirty years,” Brandon Finnigan, the director of the non-partisan election site Decision Desk HQ, wrote in an e-mail. “This doesn’t mean a Democrat won’t win these states ever again, or that Republicans have a lock on them. But they’ve red-shifted,” he said, adding that despite the state’s track record of voting for Democrats in presidential elections, “it’s just a matter of time” before even Minnesota breaks for the Republican candidate in a presidential race.
It won’t necessarily be easy for Democrats to win back voters that once supported Obama and then voted for Trump. In some parts of the country, “voters stampeded to Trump. They didn’t just move to Trump. They ran to Trump,” Finnigan said in an interview, adding: “It would take a massive event for them to come stampeding back in a cycle.” That dynamic could frustrate Democrats hoping to swiftly reverse the losses the party sustained in the presidential election."