WARMINSTER TOWNSHIP, Pa. — Pennsylvania Gov. Josh Shapiro and state Treasurer Stacy Garrity will face off this fall in a ticket-topping race for governor in the country’s largest swing state.The matchup is no surprise, as both cleared the fields in their primary contests. But the general election is notable — and the impact could reverberate beyond Pennsylvania in future elections.Shapiro, a Democrat who enjoys high approval ratings in the battleground state, enters the contest as a heavy favorite looking to cement his reputation as Pennsylvania’s dominant political figure.But those dynamics could shift in the months leading up to the November election, and Garrity and Republicans are eager to stop Shapiro — or at least dent his reputation — before he tries to go national.Pennsylvania state Treasurer Stacy Garrity in Harrisburg.Marc Levy / AP fileShapiro, a potential 2028 presidential candidate, is eager to lead the Democratic ticket to big results this year. He has zoomed in on four swing House races in the state that will be set after Tuesday, making endorsements in all four of those Democratic primaries. He is looking to play a major role in flipping those seats from Republican control — and potentially swinging the House majority for Democrats nationally.Shapiro also hopes to help flip a handful of contested state Senate seats this fall that could give Democrats unified control of state government in Harrisburg, which would give him the ability to pass a more ambitious legislative agenda next year.Shapiro won his 2022 election over Republican state Sen. Doug Mastriano by about 15 points, carrying a number of traditionally Republican counties.Republicans expect Garrity, who has been elected statewide in her own right before, to be a significantly stronger nominee than the flawed Mastriano was four years ago. She has closely tied her campaign to President Donald Trump, who has endorsed her bid.Ava Pitruzzello, a Pennsylvania Democratic Party spokesperson, said in a statement, “Stacy Garrity is an extreme, MAGA candidate who is more focused on showing her loyalty to Donald Trump than standing up for our Commonwealth.” Montana Gov. Greg Gianforte, chair of the Republican Governors Association, touted Garrity as someone who can “restore the commonwealth,” criticizing Shapiro in a statement as being “out of touch” and chasing “his political ambitions.”There has been little spending in the race so far — less than a million dollars from each campaign on ads, according to AdImpact. But that’s expected to change dramatically in Pennsylvania, which regularly draws tens of millions of dollars in campaign advertising.