Hillary Clinton's appearance Tuesday at a voter-registration event in Philadelphia further underscores just how much effort she has put into wooing voters in Pennsylvania, and just how little Donald Trump has tried.

The Democratic candidate spoke first at West Philadelphia High School, and encouraged supporters to join efforts by her campaign to boost the city's voter registration numbers.

She also pitched her audience on her economic agenda, marking the second time in just two days that she has met with members of the Rust Belt community to outline her plan to grow the economy with the "biggest investment in good-paying jobs since World War II."

Clinton then helped volunteers canvass the surrounding neighborhood after her brief address.

Earlier, on Monday, she appeared at a campaign rally in Scranton, Pa., with Vice President Biden.

Before that, from June 15-27, Clinton bombarded Pennsylvania with roughly $500,000 per day in television ads.

An estimated 3,461 Hillary for Pennsylvania volunteers have already been dispatched throughout the state, tasked with making thousands of phone calls and knocking on doors, according to a Clinton campaign source.

Her ground game in the Quaker State will also include the opening of more than 36 campaign and Democratic National Committee offices. The offices are tasked with a simple purpose: Boost voter turnout for the upcoming November elections.

As a likely result of her concentrated efforts, the former secretary of state is currently leading Trump in the state by 9 points, according to a RealClearPolitics polling average.

In contrast, Trump's efforts in Pennsylvania, which no Republican presidential candidate has carried since 1988, have been scattered at best, and nonexistent at worst.

"[L]ocal party leaders in some of the state's most pivotal counties say there's been almost no outreach from his campaign so far, and there's scant evidence of any Trump-driven ground organization," Politico reported.

BuzzFeed News added in a separate report this week that, "In Pennsylvania … the approach has been scattershot, and volunteers are taking matters into their own hands."

"Trump's campaign website still lists an office in Western Pennsylvania — located in Monroeville, outside of Pittsburgh," the report added. "Although a sign on the door said it had re-opened Aug. 8, it was locked in the afternoon when a BuzzFeed News reporter stopped by. A contact listed on the office door … later explained that the office was no longer an official Trump campaign office."

Republican leaders in the state have not painted a pretty picture.

"[T]he resources at our disposal are by far the worst I've ever seen in any campaign, at least in any presidential campaign," Michael Korns, the Republican chairman of Westmoreland County, told Politico.

Bill Donnelly, the chairman of the Montgomery County GOP, added, "The state committee, the state party has people on the ground. The Trump people themselves I haven't heard from."

And yet another state party leader said, "I've not had much contact directly from the campaign."

"Has he shown any inkling of putting together a modern campaign? I don't see it," a Harrisburg-based GOP consultant, Christopher Nicholas, told Philly.com. "All of the polling says if he ran a good campaign he could win, but it's an absolute disaster."

However, many GOP county leaders were careful to note that the GOP state chair has been in contact with members of Trump's team, including campaign manager Paul Manafort and political director Jim Murphy.

State party officials have also been coordinating with the Republican National Committee, a GOP spokesman told the Examiner.

"The RNC completely revamped our ground game based on the lessons learned from 2008 and 2012. We learned that it was important to integrate our team in the community as opposed to parachuting in a few months before the election," said Rick Gorka. "We have had staff on the ground in PA since June 2013 registering voters, organizing volunteers and building out the team for 2016."

To that end, he added, the RNC has placed 80 staffers, including a state director who has been there since June 2013, deputies and regional field representatives, on the ground in Pennsylvania.

The RNC also boasts of roughly 530 volunteers, including some who've been designated specifically to engage voters, canvass specific neighborhoods and boost election turnout.

But for some political analysts, this is hardly enough. Trump's confused and seemingly non-existent ground game in Pennsylvania means it's likely he just threw away the 2016 election.

"Oh, I'm certain how this turns out. There was awhile there when the election could've gone either way, but it has just collapsed for the guy," Brandon Finnigan, founder of the Decision Desk HQ, which has carved out a spot in the world of U.S. politics with its lightning-fast election night vote results, told the Washington Examiner.

"He has shown no interest in actually actively campaigning and running a campaign there," he said.

Finnigan has preached for months that the GOP must win Pennsylvania if it wants to win the White House. And Trump's lack of effort suggests one clear outcome for Nov. 8, he said.

"He is at a level of polling that people cannot recover from. It's at this late of a stage. It's pretty much impossible, considering his lack of campaign structure. It just doesn't exist," he said.

"The infrastructure needs to be in place before your convention if you want to have a shot of winning these large, industrial states, and it doesn't exist at all," he added.

Simply put, Trump cannot get to the required 270 Electoral College votes necessary to win without carrying Pennsylvania.

"In terms of realistic paths, there is no path for him except through Pennsylvania," he said. "He's not getting Virginia. He's not getting Colorado."

"So if he can't get to Pennsylvania, as big of a struggle as that is, he isn't getting the tougher alternates. He's locked out," he said.

Trump's campaign announced Tuesday it would soon air its first campaign ads of the general election in critical swing states, including Florida, Ohio, North Carolina and Pennsylvania.

It is unclear whether the businessman's campaign plans to do any work beyond that in Pennsylvania.

Spokespersons for the Trump campaign did not respond the Examiner's request for comment.

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This article has been updated.