The Cook Political Report, a top nonpartisan election handicapper, shifted nine House races to more favorable for Democrats in this year's midterm elections.

The new rating changes released on Friday come a few days after Pennsylvania’s nationally watched House special election, where Democrats will likely have a huge upset in a district that President Trump Donald John TrumpBiden leads Trump by 36 points nationally among Latinos: poll Trump dismisses climate change role in fires, says Newsom needs to manage forest better Jimmy Kimmel hits Trump for rallies while hosting Emmy Awards MORE won by nearly 20 points in 2016.

Democrat Conor Lamb declared victory and leads Republican state Rep. Rick Saccone by 627 votes, but some media outlets have yet to call the race.

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Fitzpatrick's and Rothfus’s seats became more favorable for Democrats after Pennsylvania’s Supreme Court redrew the state’s congressional map in its gerrymandering case. While Republicans are challenging the new lines, they’re still likely to go into effect for the midterms.

Following Tuesday's likely victory, Lamb is looking to switch districts and is preparing a run for Rothfus’s seat. The seat Lamb is poised to win will not exist under the new map, and the area will be drawn into a new, open-seat district that is even more favorable territory for Republicans.

Other notable rating changes include the shift from "likely Republican" to "lean Republican" for Rep. Steve Pearce Stevan (Steve) Edward PearceFive Latinas who could be Biden's running mate New Mexico Dems brace for crowded race to succeed Udall The 31 Trump districts that will determine the next House majority MORE’s (R-N.M.) open seat and the special election to fill the seat vacated by ex-Rep. Pat Tiberi Patrick (Pat) Joseph TiberiOhio New Members 2019 Many authors of GOP tax law will not be returning to Congress GOP Rep. Balderson holds onto seat in Ohio MORE (R-Ohio). Rep. Ami Bera Amerish (Ami) Babulal BeraThe Hill's Coronavirus Report: iBIO Chairman and CEO Thomas Isett says developing a safe vaccine is paramount; US surpasses 150,000 coronavirus deaths with roughy one death per minute Democrats fear US already lost COVID-19 battle Karen Bass's star rises after leading police reform push MORE’s (D-Calif.) seat, which is a frequent GOP target, has also shifted from lean Democrat to likely Democrat.

There are also several seats that were already considered safe for Democrats that have tilted even more in their direction, including the shift from "likely Democrat" to "solid Democrat" in the seats held by Rep. Salud Carbajal Salud CarbajalNunes opponent pins hopes on shifting demographics in uphill battle Democratic lawmakers launch 'Mean Girls'-inspired initiative to promote face masks Federal employees push for COVID-19 protections in 'dangerous' workplaces MORE (D-Calif.), Charlie Crist Charles (Charlie) Joseph CristFlorida Democrat introduces bill to recognize Puerto Rico statehood referendum Anna Paulina Luna wins Florida GOP primary in bid to unseat Charlie Crist The feds should not spend taxpayer dollars in states that have legalized weed MORE (D-Fla.) and Tom Suozzi (D-N.Y.).

Only one rating change favors Republicans due to the new maps in Pennsylvania: the seat that will likely be held by Lamb through the end of year. It will now shift from "toss-up" to "likely Republican." Saccone has been circulating petitions to run in the new district.