Incumbent GOP Senator Pat Toomey has regained the lead over Democratic nominee Katie McGinty.

That’s the conclusion of the latest Morning Call/Muhlenberg Poll, which has Toomey at 41% and McGinty with 40%.

This is a significant swift from the five-point lead McGinty had last week.

Much like the presidential race, these two surveys likely show the range of possibilities right now. If Clinton were to win the state solidly, McGinty would likely follow. If Clinton’s victory is narrower or Trump prevails, though, Toomey will probably win.

The Morning Call/Muhlenberg Poll was conducted by Muhlenberg University from September 19th to 23rd. They surveyed 486 likely Pennsylvania voters. The margin of error is +/-5%.