The full-court press is on from John Fetterman’s campaign for U.S. Senate.

With three weeks until PA’s primaries, his campaign released a memo detailing his path to victory.

“Elections are won by candidates who close the race with momentum, not the early frontrunners,” the memo from Bill Hyers and Rebecca Katz of Hilltop Public Solutions says. “Pennsylvania’s history is full of campaigns that caught fire late in the race, from Gov. Tom Wolf to Philadelphia Mayors Kenney and Nutter, to even Joe Sestak in the 2010 Senate primary.”

Fetterman’s campaign is “blowing up online” and has been attracting enthusiastic crowds across PA, giving the Braddock Mayor a great deal of confidence leading into his final push.

Fetterman’s once-unlikely path to the nomination does not seem so outlandish anymore, with the campaign pointing to recent polls showing Joe Sestak’s numbers flatlining and Katie McGinty’s numbers slipping.

The latest Franklin & Marshall poll shows Sestak with 31%, McGinty with 14% and Fetterman with 7%, though “Mayor John” thinks he is best positioned to win over the majority of the 46% undecided voters.

“Voters know the other two candidates well, and they are still undecided,” the memo said, noting Sestak has been campaigning statewide since 2009 and McGinty since 2013. “Fetterman has the most room to grow, and the more voters learn about Mayor John, the more they like him.”

His campaign is projecting a voter turnout of 1.3 million in the Democratic primary, and they believe his close connection to and endorsement of presidential candidate Bernie Sanders will earn him the “vast majority of down-ballot Bernie votes” in the year of the political outsider.

Western PA is key to Fetterman’s shot at the nomination, with the campaign banking on the region giving him the hometown boost. Fetterman is also expecting Sestak and McGinty to split the vote in Philadelphia, where they are both from.

The campaign is looking to edge the three-way race by picking up 34% of the vote (though that means Sestak and McGinty would each need to pick up 33%).

By winning 53% of the Pittsburgh media market, 25% of the Philly media market and 31% in the rest of the state, Fetterman believes he will earn a shot at incumbent SenATOR Pat Toomey in November.

The campaign is looking to use its money wisely, spending big in the cheaper Pittsburgh media market, while Sestak and McGinty blow through cash in the Philly media market, the fourth most-expensive in the country.

The memo also touts Fetterman’s grassroots momentum and his ability to reach smaller markets (putting over 30K miles on his pickup since September), with over 100 people showing up to an event in Doylestown, 80 in York and 75 in Allentown.

With three televised debates between now and April 26th, Fetterman has more opportunities to connect with voters and distinguish himself from Sestak and McGinty, “another uninspiring establishment candidate” who “is looking more and more like the Arlen Specter of 2016,” the memo asserts.

“John has dominated every debate so far, bringing audiences to their feet with his honest, straightforward approach – no canned talking points, just explaining where he stands on the issues in a way that resonates with everyday people,” the memo says. “With rising poll numbers, grassroots enthusiasm, and a highly engaged online following, Mayor John is catching fire at just the right time – and in a multi-candidate field with so many voters still undecided, he has a clear path to victory.”