Donald Trump and Kamala Harris are tied in Pennsylvania, according to a conservative pollster. The poll, conducted by Rasmussen Reports and American Thinker between September 19 and 22, showed that Harris and Trump were tied on 48 percent each.

Vice President Kamala Harris is launching a targeted effort to court Republican voters in rural Pennsylvania. Why it matters: It's a sign that the Harris campaign is not only aiming to surge Democratic turnout in vote dense Philly and Pittsburgh but also trying hard to blunt former President Trump's margins in swing or red counties across the commonwealth.

Pennsylvania, the Keystone State, could well be the keystone for the election. Where it falls will likely be determined by which of its political regions turns out in the greatest numbers.