The most junior members of the new House Democratic majority spent the last three months building monster campaign accounts to protect their seats, while almost every senator up for reelection padded their early advantage over rivals from the other side.

Campaign fundraising reports filed Monday with the Federal Election Commission show the 44 Democrats who captured Republican-held seats in 2018 raised a collective $22.5 million, more than every Democratic presidential candidate except South Bend, Ind., Mayor Pete Buttigieg Pete ButtigiegBillionaire who donated to Trump in 2016 donates to Biden The Hill's Morning Report - Sponsored by Facebook - GOP closes ranks to fill SCOTUS vacancy by November Buttigieg stands in as Pence for Harris's debate practice MORE.

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Thirteen of those freshmen ended the month of June with more than $1 million in the bank, a significant amount of money for such junior members.

Thirty-three of the 36 incumbent Democrats that the party’s campaign committee sees as potentially vulnerable next year raised more than the Republican incumbent who held that seat in the comparable quarter two years ago.

At the front of the pack are several members from California, where Democrats captured seven Republican-held seats last year. Rep. Katie Porter (D) raised more than $1 million in the last quarter, more than any other freshman, while Reps. Josh Harder (D), Harley Rouda Harley Edwin RoudaUS Chamber of Commerce set to endorse 23 House freshman Democrats OVERNIGHT ENERGY: Watchdog to weigh probe of Trump advancements on Pebble Mine | Interior finalizes public lands HQ move out West over congressional objections | EPA to issue methane rollback: report Watchdog to weigh probe of Trump administration advancements of Pebble Mine MORE (D) and Katie Hill Katherine (Katie) Lauren HillObama counsels NBA players on forming a social justice committee Republicans cast Trump as best choice for women House GOP campaign chairman insists party will win back majority MORE (D) all ended the quarter with seven-figure bank balances.

Other Democratic freshmen with more than a million in the bank include Rep. Xochitl Torres Small (N.M.), who won a Republican-held open seat by less than 2 percentage points; New Jersey Reps. Tom Malinowski Thomas (Tom) MalinowskiDCCC reserves new ad buys in competitive districts, adds new members to 'Red to Blue' program The Hill's Morning Report - Presented by Facebook - First lady casts Trump as fighter for the 'forgotten' Hillicon Valley: Lawmakers introduce resolution condemning QAnon | US Cyber Command leader vows to 'defend forward' in protecting nation from cyberattacks MORE and Mikie Sherrill Rebecca (Mikie) Michelle SherrillHillicon Valley: DOJ indicts Chinese, Malaysian hackers accused of targeting over 100 organizations | GOP senators raise concerns over Oracle-TikTok deal | QAnon awareness jumps in new poll House passes legislation to boost election security research Lawmakers call for bipartisan push to support scientific research MORE; Michigan Reps. Haley Stevens Haley Maria StevensUS Chamber of Commerce set to endorse 23 House freshman Democrats Eric Esshaki wins Michigan GOP primary to challenge Haley Stevens The Hill's Campaign Report: Buzz builds around Warren for VP MORE and Elissa Slotkin Elissa SlotkinWray: Racially motivated violent extremism makes up most of FBI's domestic terrorism cases Overnight Defense: House chair announces contempt proceeding against Pompeo | Top general says military has no role in election disputes | Appeal court rejects due process rights for Gitmo detainees Top general: Military will play no role in resolving any electoral dispute MORE and New York Reps. Max Rose Max RoseLawmakers fear voter backlash over failure to reach COVID-19 relief deal The Hill's Morning Report - Sponsored by The Air Line Pilots Association - Pence lauds Harris as 'experienced debater'; Trump, Biden diverge over debate prep Navy cancels training flight over NYC on 9/11 after criticism MORE and Antonio DelgadoAntonio Ramon DelgadoGOP leader says he doesn't want Chamber's endorsement: 'They have sold out' US Chamber of Commerce set to endorse 23 House freshman Democrats Democrats go big on diversity with new House recruits MORE.

All told, the 44 Democratic freshmen are sitting on stockpiles that total $36 million.

In the Senate, only one incumbent — Sen. Martha McSally Martha Elizabeth McSallyThe Hill's Campaign Report: Presidential polls tighten weeks out from Election Day Mark Kelly: Arizona Senate race winner should be sworn in 'promptly' New ABC/WaPost poll finds Trump edging Biden in Arizona, Florida MORE (R-Ariz.) — raised less money than her likely general election opponent, retired astronaut Mark Kelly (D), who pulled in $4.2 million.

But, in a testament to Kelly’s fundraising prowess and to McSally’s own skills, the freshman Republican raised more money in the last quarter, $3 million, than any other incumbent senator, including both Senate Majority Leader Mitch McConnell Addison (Mitch) Mitchell McConnellTrump 'no longer angry' at Romney because of Supreme Court stance On The Money: Anxious Democrats push for vote on COVID-19 aid | Pelosi, Mnuchin ready to restart talks | Weekly jobless claims increase | Senate treads close to shutdown deadline The Hill's Campaign Report: Trump faces backlash after not committing to peaceful transition of power MORE (R-Ky.) and Senate Majority Whip John Cornyn John CornynQuinnipiac polls show Trump leading Biden in Texas, deadlocked race in Ohio The Hill's Campaign Report: GOP set to ask SCOTUS to limit mail-in voting Liberal super PAC launches ads targeting vulnerable GOP senators over SCOTUS fight MORE (R-Texas).

Cornyn has more money in the bank, $9 million, than any other senator seeking reelection this year, trailed closely by McConnell, with just under $7.9 million on hand.

On the other side of the aisle, Sen. Doug Jones (D-Ala.) leads the way with $4.2 million on hand, after he pulled in $1.8 million in the last quarter. Jones, seeking reelection in a state President Trump Donald John TrumpSteele Dossier sub-source was subject of FBI counterintelligence probe Pelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Trump 'no longer angry' at Romney because of Supreme Court stance MORE won by 28 percentage points, is the most vulnerable member up for reelection next year.

Sen. Gary Peters Gary Charles PetersHillicon Valley: Subpoenas for Facebook, Google and Twitter on the cards | Wray rebuffs mail-in voting conspiracies | Reps. raise mass surveillance concerns Postmaster general says postal service can't return mail-sorting machines The Hill's Campaign Report: Trump faces backlash after not committing to peaceful transition of power MORE (D-Mich.) raised $2.2 million in the last quarter and ended with $4.7 million in the bank. His likely rival, 2018 candidate John James (R), pulled in $1.5 million in his first quarter in the race.

Sen. Jeanne Shaheen Cynthia (Jeanne) Jeanne ShaheenSenate Democrats introduce bill to sanction Russians over Taliban bounties Trump-backed candidate wins NH GOP Senate primary to take on Shaheen Democratic senator urges Trump to respond to Russian aggression MORE (D-N.H.) ended the quarter with almost $2.9 million on hand. Retired Army Brig. Gen. Don Bolduc, the GOP’s preferred candidate, entered the race just days before the end of the quarter and has not reported his fundraising yet.

Republicans hold a 53-47 seat edge in the Senate, and the GOP is defending 22 of the 34 seats up for election this year. Many Democratic challengers have only just begun to campaign and raise money seriously, setting them well behind the incumbents they will challenge.

In Iowa, businesswoman Theresa Greenfield (D) pulled in $625,000 in the month between her formal decision to challenge Sen. Joni Ernst Joni Kay ErnstTillis appears to reinforce question about COVID-19 death toll The power of incumbency: How Trump is using the Oval Office to win reelection Poll: Trump opens up 6-point lead over Biden in Iowa MORE (R) and the end of the quarter. She ended with about $600,000 in the bank, less than a fifth of the $3.4 million Ernst has on hand.

In Maine, state House Speaker Sara Gideon (D) announced her campaign after the end of the quarter, though her campaign said it had pulled in $1 million in its first 10 days. She has work to do to catch up to Sen. Susan Collins Susan Margaret CollinsThe Hill's Campaign Report: Trump faces backlash after not committing to peaceful transition of power Billionaire who donated to Trump in 2016 donates to Biden Credit union group to spend million on Senate, House races MORE (R), who is sitting on a $5.4 million campaign account.

And in Colorado, Sen. Cory Gardner Cory Scott GardnerBillionaire who donated to Trump in 2016 donates to Biden The Hill's Morning Report - Sponsored by Facebook - Trump previews SCOTUS nominee as 'totally brilliant' Cook Political Report shifts Colorado Senate race toward Democrat MORE (R) raised $2 million and sits on $4.9 million. The Democrats running against him combined to raise more than the incumbent Republican, but they will spend much of that money on next year’s June 30 primary. A dozen candidates are already running for the right to face Gardner, and at least one other prominent candidate is considering entering the race.

Republican Party committees hold a financial advantage so far this year, entirely thanks to the Republican National Committee’s (RNC) strong fundraising performance ahead of Trump’s reelection bid. The RNC had $37 million in the bank at the end of May, the latest figures available. The Democratic National Committee has just $8.2 million on hand, and nearly $6 million in remaining debt.

The National Republican Congressional Committee held $20 million in reserves, slightly more than the Democratic Congressional Campaign Committee’s $17 million. And the Democratic Senatorial Campaign Committee (DSCC) had $13 million on hand, more than the National Republican Senatorial Committee’s (NRSC) $11.2 million. The NRSC still owes vendors $6 million, while the DSCC owes debts of $16.9 million.

The party committees must report their fundraising results each month. The reports for June are due at the weekend.