Two polls released on the eve of the first presidential debate show Donald Trump has closed the gap with Hillary Clinton in two battleground states that could prove the cornerstone of an electoral college victory.

Clinton only leads Trump by 3 points, 44 percent to 41 percent, in a head-to-head matchup in Pennsylvania, according to a new Morning Call/Muhlenberg College poll. Only a week earlier, Clinton led Trump by 9 points.

In a four-way matchup with Libertarian Party candidate Gary Johnson and Green Party candidate Jill Stein, Trump trails Clinton by just 2 points.

“[Trump’s] in the beginning now of a really hard push in the Philadelphia suburbs,” Gleason said. “They’re coming home. They are coming home.”

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The poll shows Trump has made significant gains unifying the GOP for the final stretch of the campaign. Trump notches 85 percent support among Republican voters, up a whopping 14 points from the previous week.

“I’ve said to Mr. Trump — and I talk to him pretty often — jobs, security, and Mrs. Clinton. Please, don’t talk about anything else,” Pennsylvania GOP Chairman Rob Gleason told Politico. “He’s in the beginning now of a really hard push in the Philadelphia suburbs … They’re coming home. They are coming home.”

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Trump’s surge carried over into Colorado. A CBS News Battleground Tracker poll Sunday showed the GOP nominee only 1 point behind Clinton, at 39 percent to 40 percent, in a two-way race.

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The news that Colorado and Pennsylvania haven fallen into dead-heat status is a major boon to Trump’s chances of winning the presidency.

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If Trump wins all the states currently leaning in his favor (notably Ohio, North Carolina, Nevada, and Iowa) and takes the crucial prize of Florida, he would still need one more victory to win the Electoral College.

If Trump can take the lead in either Colorado or Pennsylvania, in addition to those other states, he would likely defeat Clinton with either 275 or 286 electoral votes.

Headed into the first presidential debate at Hofstra University in New York Monday, Trump and Clinton are practically neck-and-neck in national polls. A Washington Post/ABC News poll released Thursday showed Clinton only beating Trump nationally by 2 percent in both a two-way and a four-way matchup — well within the margin of error.