Donald Trump has erased Hillary Clinton’s lead in the battleground state of Pennsylvania. According to a new poll, Trump has essentially tied Hillary in what was once thought a lock for the Democrats.

Politico reports:

Poll: Trump closing gap in Pennsylvania

Just two days before the first presidential debate, Donald Trump is narrowing the gap with Hillary Clinton in the key state of Pennsylvania, a Morning Call/Muhlenberg College poll released Saturday shows.

There is now a 3-point difference between the Democratic and GOP nominees, with Clinton leading 44 percent to 41 percent among likely voters in a head-to-head matchup, according to the poll. The difference is within the margin of error, which is 5 points. Last week, Clinton held a 9-point lead over Trump, 47 percent to 38 percent.

With Libertarian candidate Gary Johnson and Green Party candidate Jill Stein added, the gap shrinks to 2 percentage points, with Clinton and Trump polling at 40 percent and 38 percent, respectively. Johnson is at 8 percent and Stein at 3 percent.

Trump’s path to 270 electoral votes would be much easier with Pennsylvania.

If Trump manages to win the state, it would be a devastating loss for Democrats.