Democratic sources cite wins in places like upstate New York, Iowa, Maine and Pennsylvania as evidence the party has found a populist platform that connects with those voters and could help it retake the White House in 2020. The message, rooted in healthcare and economic inequality, was backed by research from Democratic groups such as the House Majority PAC and the Center for American Progress, a liberal think tank. “We took a deep dive into their motivations and concerns in order to shape Democratic messaging and find a way back,” said Jeb Fain, a spokesman for House Majority PAC, which ran TV ads for candidates in Maine and New York.
