Election Day is less than five months away, and candidates, committees and outside groups are pouring money into races around the country in the hopes of clinching the House majority.

The biggest players — the Democratic Congressional Campaign Committee (DCCC), the National Republican Congressional Committee (NRCC), the pro-Democrat House Majority PAC (HMP) and the pro-Republican Congressional Leadership Fund (CLF) — have reserved a combined $100 million in advertising time for the fall.

While there is even more spending to come as the battlefield and advertising rates ebb and flow, here are the top five states with the most ad reservations by these major groups.

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Minnesota

The “Land of 10,000 Lakes” is one of the most competitive states in the 2018 election cycle. That’s why the four groups have reserved a combined $22.7 million, more than in any other state.

Most of that spending focuses on the Minneapolis media market, which encompasses much of the state and its most competitive congressional districts.

Republicans are setting their sights on two open seats vacated by Democratic Reps. Tim Walz Tim WalzGOP Senate candidate says Trump, Republicans will surprise in Minnesota Presidential race tightens in Minnesota as Trump plows resources into state National Guard activated in Minneapolis after homicide suspect's reported suicide MORE and Rick Nolan Richard (Rick) Michael NolanMinnesota Rep. Pete Stauber glides to victory in GOP primary Hold off on anti-mining hysteria until the facts are in Minnesota New Members 2019 MORE. President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE won both of those more rural districts handily in 2016, but the Democratic incumbents had kept their seats blue. But now their retirements are robbing the Democrats of their incumbency advantage, and the GOP has already deployed Trump himself to rally in the 8th District to boost GOP turnout there.

Meanwhile, Democrats are eyeing seats held by GOP Reps. Jason Lewis Jason Mark LewisThe Hill's Campaign Report: Trump and Biden vie for Minnesota | Early voting begins in four states | Blue state GOP governors back Susan Collins GOP Senate candidate says Trump, Republicans will surprise in Minnesota Tina Smith wins Democratic Senate primary in Minnesota MORE and Erik Paulsen Erik Philip PaulsenMinnesota Rep. Dean Phillips wins primary Pass USMCA Coalition drops stance on passing USMCA Two swing-district Democrats raise impeachment calls after whistleblower reports MORE — Trump barely won Lewis’s seat in 2016 and lost Paulsen’s by 10 points. Both districts are more urban or suburban, so Democrats are hoping they can continue to overperform with moderates in areas like those.

Pennsylvania

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The Keystone State is home to a handful of marquee races that could help decide the House majority, something reflected in the more than $20 million in spending that has been booked there.

The state became instantly more competitive earlier this year when the state Supreme Court redrew Pennsylvania’s congressional boundaries. Thanks in part to those changes, as well as a handful of retirements, Democrats have at least five strong opportunities to flip seats.

Most of the spending is in the Philadelphia media market, which includes four competitive districts. Three are open seats vacated by retiring Rep. Ryan Costello Ryan Anthony CostellloTrump struggles to stay on script, frustrating GOP again Bottom line Former GOP Rep. Costello launches lobbying shop MORE (R) and former GOP Reps. Patrick Meehan and Charlie Dent Charles (Charlie) Wieder DentRepublican former Michigan governor says he's voting for Biden Biden picks up endorsements from nearly 100 Republicans Bush endorsing Biden? Don't hold your breath MORE. The other is home to Rep. Brian Fitzpatrick Brian K. FitzpatrickFlorida Democrat introduces bill to recognize Puerto Rico statehood referendum DCCC reserves new ad buys in competitive districts, adds new members to 'Red to Blue' program 2020 Global Tiger Day comes with good news, but Congress still has work to do MORE (R), one of the most vulnerable incumbents this cycle.

Fitzpatrick’s race will likely be the most competitive of the bunch. He’s taking on Democratic philanthropist Scott Wallace in a district that Trump narrowly lost in 2016.

Democratic lawyer Mary Gay Scanlon and Air Force veteran Chrissy Houlahan (D) are the heavy favorites to replace Meehan and Costello, respectively. Another Democratic lawyer, Susan Wild, will run against former Olympian Marty Nothstein to replace Dent in another Democratic-leaning district.

The NRCC has reserved $7.8 million of ad time in Philadelphia, compared to the DCCC’s $1.7 million and HMP’s $3 million. CLF has earmarked $4 million specifically toward protecting Fitzpatrick on the air.

The NRCC is also planning to drop at least $3.8 million in Pittsburgh, home to GOP Rep. Keith Rothfus Keith James RothfusCNN's Tapper tried to talk GOP candidate out of running against Democratic incumbent: report Lobbying world Conor Lamb gets 2020 challenger touted by Trump MORE. Redistricting puts Rothfus in the toughest race of his career, against fellow Rep. Conor Lamb (D).

California

California’s prominence on the midterm map won’t surprise many, and the four groups have already reserved more than $19 million in ads there.

The big money has centered on Los Angeles, the media market that includes districts held by GOP Reps. Steve Knight, Mimi Walters and Dana Rohrabacher Dana Tyrone RohrabacherDemocrat Harley Rouda advances in California House primary Lawyers to seek asylum for Assange in France: report Rohrabacher tells Yahoo he discussed pardon with Assange for proof Russia didn't hack DNC email MORE. It also spans all of the district being vacated by Rep. Ed Royce Edward (Ed) Randall RoyceThe 'extraordinary rendition' of a US Presidential Medal of Freedom recipient, 'Hotel Rwanda' hero Gil Cisneros to face Young Kim in rematch of 2018 House race in California The most expensive congressional races of the last decade MORE (R) and part of the district currently held by retiring Rep. Darrell Issa Darrell Edward IssaDCCC reserves new ad buys in competitive districts, adds new members to 'Red to Blue' program Wife of former Rep. Duncan Hunter sentenced to 8 months of home confinement Harris endorses Democrat in tight California House race MORE (R). All of those races are considered among the toughest in the country for the GOP.

Knight is running against Katie Hill (D), who runs a Los Angeles nonprofit to help the homeless; Walters will take on professor Katie Porter (D), a protege of Sen. Elizabeth Warren Elizabeth WarrenDimon: Wealth tax 'almost impossible to do' CNN's Don Lemon: 'Blow up the entire system' remark taken out of context Democrats shoot down talk of expanding Supreme Court MORE (D-Mass.); Young Kim (R) faces philanthropist Gil Cisneros (D) for Royce’s seat; Rohrabacher will take on real estate developer Harley Rouda (D); and local politician Diane Harkey (R) is running against environmental lawyer Mike Levin (D) for Issa’s seat.

HMP has booked $5.2 million in ads in Los Angeles, while CLF has reserved at least $2 million for each of the seats held by Walters, Knight and Rep. Jeff Denham Jeffrey (Jeff) John DenhamBottom line Bottom line Lobbying world MORE (R). CLF is also spending $2 million on advertising to help Kim.

Levin will receive a boost by HMP’s $1.24 million in ad reservations for the San Diego market.

Further north, in the Sacramento area, both the NRCC and HMP have each booked about $1.5 million in ad reservations. The toughest race in that area will be Democratic 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 reelection fight against former Marine Andrew Grant (R), but the race still tilts in Bera’s favor.

And the NRCC is also spending $1.2 million in the San Joaquin Valley’s television market, where Rep. Jim Costa James (Jim) Manuel CostaHouse Democrats call on State Department for information on Uighur prisoner Ekpar Asat Hispanic Caucus requests meeting with private detention center CEOs Black Caucus rallies behind Meeks for Foreign Affairs gavel MORE (D) will face off against former congressional aide Elizabeth Heng (R). Costa’s district is reliably blue, but he’s won by narrow margins in past midterm years.

Texas

Texas is home to three vulnerable Republican incumbents in districts Hillary Clinton Hillary Diane Rodham ClintonDemocratic groups using Bloomberg money to launch M in Spanish language ads in Florida The Hill's Campaign Report: Presidential polls tighten weeks out from Election Day More than 50 Latino faith leaders endorse Biden MORE won in 2016.

Rep. Will Hurd William Ballard HurdHillicon Valley: Oracle confirms deal with TikTok to be 'trusted technology provider' | QAnon spreads across globe, shadowing COVID-19 | VA hit by data breach impacting 46,000 veterans House approves bill to secure internet-connected federal devices against cyber threats House Democrats' campaign arm reserves .6M in ads in competitive districts MORE (R) knows nothing but competitive races — his massive border district is always up for grabs. He’s running against Gina Ortiz Jones (D), an Iraq War veteran.

Hurd will be the beneficiary of a portion of the $1.8 million in spending the NRCC booked for San Antonio, as well as the $2.1 million CLF has set aside for his race so far.

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In Houston, longtime Rep. John Culberson John Abney Culberson2020 Democratic Party platform endorses Trump's NASA moon program Bottom line Ex-Rep. Frelinghuysen joins law and lobby firm MORE (R) is gearing up for the fight of his political life against lawyer Lizzie Pannill Fletcher (D). Culberson had once been seen as an exemplar of a congressman unprepared for the 2018 environment, but he’s since kicked his campaign into gear.

Now, CLF has reserved $2.45 million in ads to boost his campaign, while HMP has booked $2 million to knock him down.

Dallas-area Republican Rep. Pete Sessions Peter Anderson SessionsThe Hill's Campaign Report: New polls show Biden leading by landslide margins The Hill's Morning Report - Presented by Argentum - In Rose Garden, Trump launches anti-Biden screed Pete Sessions wins GOP runoff in comeback bid MORE rounds out the trifecta, but while he’s long been seen as less vulnerable than Hurd or Culberson, that could change.

Democrats have a strong challenger in former professional football player and Obama official Colin Allred. And Dallas has also seen a major demographic change that has made the area more diverse. Those dynamics were enough for the Cook Political Report to move Sessions’s race to a “toss-up” earlier this month.

Florida

Florida is also home to a handful of battleground races where Democrats will likely be on the offensive.

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Democrats appear more likely to flip the Miami-area seat held by retiring GOP Rep. Ileana Ros-Lehtinen Ileana Carmen Ros-LehtinenEx-Florida GOP congresswoman under federal investigation: report 'Trump show' convention sparks little interest on K Street Shalala to face Salazar in Florida rematch MORE. But they’re buckling up for a serious race in Rep. Carlos Curbelo Carlos Luis CurbeloGOP wants more vision, policy from Trump at convention Mucarsel-Powell, Giménez to battle for Florida swing district The Memo: GOP cringes at new Trump race controversy MORE’s district, where the Republican congressman hopes to have forged enough of an independent path to avoid being dragged down by Trump in the heavily Hispanic district.

The NRCC has $3.2 million of air time booked in the Miami market, while CLF has $2.5 million devoted specifically to him. But Democrats are planning to get in on the fun too, with $2 million from the DCCC and $1.1 million from HMP.

The state also has two additional races where both sides are looking to flip a seat, but are waiting for primaries to decide their candidates.

Republicans are looking for revenge in the Orlando area after Rep. Stephanie Murphy Stephanie MurphyDemocrats scramble on COVID-19 relief amid division, Trump surprise Bank lobbying group launches ad backing Collins reelection bid House Democrats call on State Department for information on Uighur prisoner Ekpar Asat MORE (D) won a tough race in 2016. HMP has $1.9 million reserved in that media market, and much will likely go to helping Murphy.

Democrats, meanwhile, are targeting Rep. Brian Mast Brian Jeffrey MastSen. Rand Paul says he and his wife were 'attacked by an angry mob' after Trump speech Florida Republican apologizes after Facebook posts about sex, rape uncovered Most Black women since 2004 running for office this year MORE (R) in the West Palm Beach market after his strong campaign in 2016. But so far, HMP is the only group to play in that market, with a modest $400,000 in reservations.