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The most expensive congressional races of the last decade

The most expensive congressional races of the last decade
© Greg Nash

Political campaigns are becoming more expensive, as more Americans contribute to candidates and outside groups blanket the airwaves and fund armies of canvassers. Since 2010, Republicans, Democrats and their outside supporters have spent more than $25 billion on federal elections alone.

Here are the 10 races — five Senate contests, five House elections — that cost the most money over the last decade:

Florida Senate, 2018: $214 million

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Rick Scott (R) made millions during a career as a health care executive, and he spent a huge chunk of it to win Florida’s governor’s office twice. Then he wrote himself another $63 million check when he decided to challenge Sen. Bill NelsonClarence (Bill) William NelsonDemings raises million after announcing Senate bid against Rubio Russia threatens to leave International Space Station program over US sanctions Nikki Fried, only statewide elected Democrat in Florida, launches challenge to DeSantis MORE (D).

Scott’s campaign spent a total of $85 million, more than double Nelson’s $33 million. Outside groups dropped an incredible $97 million of their own. For all of Scott’s spending advantage, he only narrowly ousted Nelson, by about 10,000 votes out of more than 8 million cast.

Texas Senate, 2018: $137 million

In a rapidly changing Texas, former Rep. Beto O’Rourke (D) caught lightening in a bottle — and he almost caught Sen. Ted CruzRafael (Ted) Edward CruzOvernight Defense: Top admiral shoots back at criticism of 'woke' military | Military guns go missing | New White House strategy to battle domestic extremism Top admiral shoots back at criticism of 'woke' military: 'We are not weak' Biden tries to erase Trump's 'America First' on world stage MORE (R).

O’Rourke’s loose style and infectious videos snapped in Whataburger parking lots attracted an incredible $79 million in donations, while Cruz raised and spent a not-unimpressive $45 million of his own. Outside groups added an extra $13 million, with more than half of that money funding attack ads against O’Rourke.

Cruz eked out a narrow win, taking 50.9 percent of the vote, but O’Rourke may have demonstrated just how close Texas is to becoming a competitive state. O’Rourke won more than 4 million votes, more than Hillary ClintonHillary Diane Rodham ClintonProgressives rave over Harrison's start at DNC Hillary Clinton backs Manhattan DA candidate in first endorsement of year NSA leaker Reality Winner released from federal prison MORE or Barack ObamaBarack Hussein ObamaGOP senator: I want to make Biden a 'one-half-term president' Obama: Fox News viewers 'perceive a different reality' than other Americans Police investigating death of TV anchor who uncovered Clinton tarmac meeting as suicide MORE won in their presidential races.

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Missouri Senate, 2018: $128 million

Sen. Claire McCaskillClaire Conner McCaskillThe Hill's Morning Report - Presented by Uber - Jan. 6 commission vote delayed; infrastructure debate lingers into June Missouri Republicans move to block Greitens in key Senate race Democratic Kansas City, Mo., mayor eyes Senate run MORE (D) played her politics well in 2012, when her campaign virtually picked its own deeply flawed opponent. No such luck in 2018, when she faced Attorney General Josh HawleyJoshua (Josh) David HawleyHillicon Valley: Big Tech critic Lina Khan named chair of the FTC | Lawmakers urge Biden to be tough on cyber during summit with Putin | TSA working on additional security regulations following Colonial Pipeline hack Big Tech critic Lina Khan named chair of the FTC Rick Scott urges NBC to demand Winter Olympics be moved from China over human rights abuses  MORE (R). McCaskill raised a whopping $39 million, while Hawley pulled in $11 million of his own. 

Outside groups spent millions more than both candidates combined: The Senate Leadership Fund, which backs Republicans, and the Senate Majority PAC, which backs Democrats, dropped about $20 million each on the race. Republicans spent about $8 million more beating up on McCaskill than Democrats did on Hawley; Hawley unseated McCaskill by a 6-point margin.

Florida Senate, 2010: $79 million

When a state legislator takes on a sitting governor of his own party, it rarely works out well. But when that legislator is Florida House Speaker Marco RubioMarco Antonio RubioPast criticism of Trump becomes potent weapon in GOP primaries Lawmakers urge Biden to be tough on cybersecurity during summit with Putin Five years after the Pulse nightclub massacre the fight for LGBTQ+ rights continues MORE (R) and that governor is Charlie CristCharles (Charlie) Joseph CristFlorida congressional candidate says opponents conspiring to kill her Florida state Rep. Michele Rayner launches bid for Crist's House seat Congressional Black Caucus blocking Black House Republican from joining group MORE, things get a little hectic. Challenging Crist from his right, Rubio caught the Tea Party wave and looked like he was cruising to a stunning primary upset.

But then Crist left the GOP to run as an independent, virtually boxing out the Democratic nominee, then-Rep. Kendrick Meek. Rubio raised and spent about $21 million, Crist chipped in $13 million of his own, and Meek dropped $9 million on the race. Outside groups filled in the rest as Rubio took 49 percent of the vote, 20 points ahead of Crist.

Massachusetts Senate, 2012: $77 million

From the moment Sen. Scott Brown (R) won a special election to fill the late Ted Kennedy’s seat in deep blue Massachusetts, he was a marked man. And Elizabeth WarrenElizabeth WarrenProgressives rave over Harrison's start at DNC On The Money: Schumer to trigger reconciliation process on Wednesday | Four states emerge as test case for cutting off jobless benefits Big Tech critic Lina Khan named chair of the FTC MORE was the one marking him. Warren, in her first run for public office, raised $42 million, while Brown shelled out $35 million defending himself.

Outside groups spent only about $8 million on the seat, a relative pittance compared to a battleground like Missouri. The National Republican Senatorial Committee, perhaps reading the writing on the wall, spent almost nothing on a seat they didn’t think they could defend. Warren beat Brown, but by a 7-point margin — at the same time President Barack Obama beat former Massachusetts Gov. Mitt RomneyWillard (Mitt) Mitt RomneyChina's genocide must be stopped How Biden can get the infrastructure bill through Congress The Hill's 12:30 Report: Sights and sounds from Biden's European trip MORE by a 23-point margin.

Georgia’s 6th District, 2017: $48 million

When President TrumpDonald TrumpKushner lands book deal, slated for release in 2022 Biden moves to undo Trump trade legacy with EU deal Progressives rave over Harrison's start at DNC MORE tapped Rep. Tom PriceThomas (Tom) Edmunds PriceA proposal to tackle congressional inside trading: Invest in the US Biden health nominee faces first Senate test Focus on cabinet nominees' effectiveness and expertise, not just ideology MORE (R) as his first Secretary of Health and Human Services, he triggered the most expensive fight over a U.S. House district in American history. The Democratic nominee, Jon Ossoff, pulled in $30 million — more than many Senate nominees are able to raise — while Republican nominee Karen HandelKaren Christine HandelOssoff defeats Perdue in Georgia Senate runoff McBath wins rematch against Handel in Georgia House race House Democrats' campaign arm reserves .6M in ads in competitive districts MORE pulled in more than $8 million.

Republican groups dropped $14 million defining Ossoff, while Democrats spent millions more against Handel. Handel held on to carry the suburban Atlanta district by a slim 3-point margin — but she lost her seat the next year to Rep. Lucy McBathLucia (Lucy) Kay McBathGun violence: Save the thoughts and prayers, it's time for Senate action Sunday shows preview: US hails Israel-Hamas cease-fire; 'vast differences' remain between Biden, GOP on infrastructure Lawmakers brace for battles with colleagues as redistricting kicks off MORE (D). 

California’s 39th District, 2018: $36 million

Gil CisnerosGilbert (Gil) Ray CisnerosMORE won the Mega Millions lottery — and he used the money to win a House seat as well. Cisneros, making his first run for public office, wrote his campaign a $9 million check in his bid to replace retiring Rep. Ed RoyceEdward (Ed) Randall RoyceCalifornia was key factor in House GOP's 2020 success Top donor allegedly sold access to key politicians for millions in foreign cash: report Here are the 17 GOP women newly elected to the House this year MORE (R), while opponent Young Kim (R), a former state assemblywoman, raised $2 million on her own.

The Congressional Leadership Fund, which backs Republicans, made Cisneros their top target of the 2018 cycle, dumping $9 million on television spots. The Democratic-backed House Majority PAC spent $3 million of their own on pricey Los Angeles airtime, making the race the most expensive House contest in California history.

California’s 48th District, 2018: $35 million

Rep. Dana RohrabacherDana Tyrone RohrabacherFormer Rep. Rohrabacher says he took part in Jan. 6 march to Capitol but did not storm building On The Trail: The political losers of 2020 California was key factor in House GOP's 2020 success MORE (R) was another victim of the Democratic wave that swept over California, thanks in no small part to the $11 million that Democratic outside groups dumped on his head. Businessman Harley RoudaHarley Edwin RoudaFormer Rep. Rohrabacher says he took part in Jan. 6 march to Capitol but did not storm building Republicans race for distance from 'America First Caucus' California was key factor in House GOP's 2020 success MORE (D) benefitted from all that spending, and he pulled in an impressive $7 million of his own.

Rouda, who had never before sought public office, barely escaped the all-party primary, finishing in second place by just over 100 votes. In November, he helped complete the Democratic sweep in Orange County, taking 53.6 percent of the vote against Rohrabacher.

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Washington’s 8th District, 2018: $33 million

Democrats spent years trying to beat Rep. Dave ReichertDavid (Dave) George ReichertRep. Kim Schrier defends Washington House seat from GOP challenger Washington Rep. Kim Schrier wins primary Mail ballot surge places Postal Service under spotlight MORE (R) in a suburban and exurban Seattle district. So when he retired, the race to replace him was guaranteed to be costly. Seven outside groups spent more than $1 million each on the race, and first-time candidate Kim SchrierKimberly (Kim) Merle SchrierOmar feuds with Jewish Democrats The Hill's Morning Report - Presented by the National Shooting Sports Foundation - At 50 days in charge, Democrats hail American Rescue Plan as major win Democrats spar over COVID-19 vaccine strategy MORE (D) pulled in $8 million for her campaign.

The odds were against former state Sen. Dino Rossi (R), who narrowly lost two gubernatorial campaigns in Washington over the years. This time, he raised $4.8 million — but it wasn’t enough. Schrier won the district with 52 percent of the vote.

New York’s 19th District, 2018: $32 million

Antonio DelgadoAntonio Ramon DelgadoCuomo job approval drops 6 points amid nursing home controversy: poll Cuomo takes heat from all sides on nursing home scandal We lost in November — we're proud we didn't take corporate PAC money MORE didn’t make it as a rapper, so he decided to try his hand at politics. And in his first run for public office, Delgado raised a whopping $9 million — more than twice as much as Rep. John FasoJohn James FasoDemocrats go big on diversity with new House recruits Kyle Van De Water wins New York GOP primary to challenge Rep. Antonio Delgado The most expensive congressional races of the last decade MORE (R), who pulled in almost $4 million.

The Congressional Leadership Fund and the House Majority PAC each made the Hudson Valley district a top priority, spending millions on a seat both Barack Obama and President Trump won. Delgado outlasted Faso by a five-point margin.