Four years ago, Democrats in the United States were counting on so-called "blue wall" states to send Hillary Clinton to the White House. Some of these states in the rust belt — including Michigan, Wisconsin, and Pennsylvania — were a significant factor in Donald Trump's victory. The President won them by incredibly thin margins, knocking out enough bricks in the blue wall to win the election. Democrats will need to flip fewer than 78,000 votes to win back all three this year, making it one of their most straightforward paths to the presidency. In this ABC News article, USSC CEO Simon Jackman is quoted.