Presidential hopefuls in the Democratic field must report their fundraising totals for the third quarter of 2019 by 11:59 p.m. Tuesday.

The information is a key sign of whether they'll have the bank to last before the first ballots are cast in the early caucuses in February.

Candidates have been sending out dire pleas heading into the final days, pushing out a cascade of fundraising emails and running ad blitzes on social media.

The close of books of the third fundraising quarter also comes on the heels of House Democrats' impeachment inquiry into President Donald Trump, which helped fuel a last-minute boost to the president's re-election campaign efforts as well as his 2020 Democratic rivals' war chests.

Six of the 2020 Democratic presidential hopefuls have dropped out of the race since the last fundraising quarter, and the field could narrow even further as the race enters into a new crucial phase.

The third quarter covered the three months of July, August and September.

ABC News will continue to update this story as more candidates release details on their fundraising numbers.

President Donald Trump's re-election campaign has another record breaking quarter in fundraising

The Trump campaign, his joint fundraising entities and the Republican National Committee have raised $125 million in the third quarter and ended September with more than $156 million cash on hand, an RNC official told ABC News.

The RNC and the Trump campaign are touting the president's re-election efforts have twice as much cash on hand as former President Barack Obama's re-election campaign had at this point in 2011, which is verifiable through campaign finance records. By the end of September 2011, Obama's 2012 campaign had $61.4 million and the Democratic National Committee had $14.7 million, bringing their total to $76 million.

Unlike his Democratic rivals, Trump's haul includes money raised through the president's campaign as well as his joint fundraising committees with the Republican National Committee. The Democrats are all currently fundraising without the help of the party committee.

Trump's latest fundraising haul comes as the campaign and the RNC dig into their counter impeachment efforts -- including the campaign's $8 million cable and digital ad buy targeting former Vice President Joe Biden over the Ukraine controversy and a $2 million television and digital buy from the RNC over the weekend.

The former Republican governor of Massachusetts, Bill Weld, raised just under half a million in the third quarter, but spent around $548,000. He ends the quarter with around $200,000 on hand.

One of Trump's GOP challengers, former Illinois Rep. Joe Walsh, raised just over $129,000 in the third quarter, but loaned himself $100,000, according to new filings.

Another Republican contender, Mark Sanford -- a former congressman and governor of South Carolina -- raised $58,000, which left him $1.39 million on hand.

Bernie Sanders reinforces his grassroots fundraising prowess with $25.3 million third quarter haul

Despite recent polling that showed his campaign trailing behind some of his 2020 Democratic rivals, the Vermont senator set the tone for third quarter fundraising Tuesday morning, announcing a whopping $25.3 million haul. The number eclipses Sen. Elizabeth Warren's combined total raised in the first two quarters and leaves Sanders with over $61.5 million in receipts this year.

Sanders has continued a strong grassroots support base, bringing in more than 1.4 million individual contributions this quarter for an average donation of $17.90, according to the campaign. So far this year, the Sanders campaign has received more than 3.3 million donations with an average contribution for the year of $19.

Warren surpasses Biden in latest fundraising haul but falls short of Sanders

Massachusetts Sen. Elizabeth Warren released a hefty fundraising haul of $24.6 million on Friday, providing a window into her campaign's ramped up spending as they head into an increasingly competitive race where they now hold a top spot in the polls.

The numbers show that Warren, who has overcome both Biden and Sanders in a handful of polls over recent weeks, raised almost $10 million more than Biden this quarter. She did not, however, raise as much money as her progressive opponent in the race, Sanders, who out-raised her by a little more than half a million dollars.

Warren also has not closed in on Sanders' strong donor base: in the last three months, he pulled in 1.4 million donations while Warren secured about 940,000 donations.

Both Warren and Sanders are the only two candidates in the race who are not participating in high-dollar fundraisers and relying only on grassroots support. Between the two of them, they've raised nearly $50 million over the last quarter alone.

Warren's fundraising numbers also showed that her campaign has significantly increased spending, burning through about 76% of the money they've brought in. The campaign's spending rate this quarter was about 20% higher than last quarter, though it's still not higher than Sanders' past spending rates and only slightly higher than Biden.

Some of this money went toward Warren's recent eight-figure investment in advertising in the early-voting states, the largest amount she has spent on ads so far in the campaign. Her campaign is also building out its team in states that will begin to vote in March, as well as in states with key Senate and House races in an effort to win Democratic seats up and down the ballot.

Pete Buttigieg falls short of his second quarter total but remains a strong fundraiser

The South Bend mayor also, who in recent polls lands among the middle tier, announced Tuesday morning that it raised $19.1 million in the third quarter with 182,000 new donors and average donation of $32, slipping from the top fundraiser title he had boasted in the second quarter when he raised $24.8 million.

Buttigieg, who has successfully courted both high-dollar donors as well as small-dollar supporters, however, remains a prominent fundraiser, bringing in a total of more than $51 million this year from more than $1.25 million individual contributions.

Joe Biden trails behind his 2020 rivals in fundraising despite leading in polls

Former Vice President Joe Biden's campaign announced on Thursday that it raised $15.2 million in the third quarter, more than $6 million short of his previous fundraising haul. He's also trailing behind at least two of his 2020 Democratic contenders, Sanders and Buttigieg, despite consistently leading the polls in the primary field.

According to the campaign, the average donation this quarter was $44 and 56% were first-time donors. The last week of September was the campaign's best week for its online fundraising since early May, just days after the campaign launched.

The campaign also touted strong grassroots support in the third quarter, boasting that 98% of the donations of less than or equal to $200 came from grassroots donors. That was the case in the previous quarter as well, with 99% of the donations coming from small-dollar donors, but in dollar amounts less than 40% of the total $21.5 million haul from grassroots donations.

Biden's third quarter receipt brings his fundraising total since launching his campaign in late April -- months later than some of his 2020 rivals -- to $36.7 million.

Kamala Harris raises $11.6 million in third quarter

Sen. Kamala Harris, D-Calif., announced that she raised $11.6 million with an average donation of $34 between July and September, trailing slightly behind her fundraising from previous two quarters. According to the campaign, the California senator ended the latest quarter with $10 million cash on hand. She is polling toward the middle of the pack of contenders.

In total, Harris has raised $35.5 million so far this year from more than 850,000 individual contributions.

Andrew Yang raises $10 million in the third quarter – triple his previous quarter's record

Businessman Andrew Yang's campaign announced Wednesday morning that it raised a whopping $10 million in the third quarter, more than triple the $2.8 million they raised in the previous quarter.

The latest fundraising haul from the Yang campaign, which has seen a steady surge in the last few months, not only set him apart from some of his lower-polling rivals but also put him ahead of some of the higher-polling candidates, including Booker.

According to the campaign, Yang received donations from nearly 300,000 unique donors with an average contribution of $30.18 and entered the fourth quarter with $6.3 million in the bank.

Much of Yang's donations throughout the year have come from small-dollar donations, including this quarter, when nearly 82% of the total haul came from online donations under $200.

Yang, who is polling in the bottom tier, had a particularly strong fundraising support in September, when the campaign set a last-minute fundraising goal similar to that of Booker's campaign and raised more than $2 million in the last week of the third quarter fundraising deadline.

Cory Booker eclipses Q2 total, raises $6 million in third quarter

Sen. Cory Booker, D-N.J., announced his campaign raised over $6 million in the third quarter, including $2.16 million in the final 10 days of the period. The last minute bump in fundraising stemmed from an internal memo, which was leaked and posted on Medium on Sept. 21, in which Booker's campaign manager, Addisu Demissie, said the candidate needs to raise $1.7 million by Sept. 30 to be in a position to continue running for president. He has trailed far behind the front-runners in polls.

The third quarter was the best quarter for the campaign, with September being the campaign's strongest fundraising month.

The campaign noted that the final push included more than 46,000 donations. The third quarter haul represents a more than 30% increase over the second quarter - when Booker brought in just over $4.5 million.

Despite hanging their campaign's hopes on raking in $1.7 million 10 days before the deadline, Booker's campaign manager said their strategy moving forward is grounded in their belief that the race remains "wide open," as well as, efforts to hire 40 new staff members, open offices in early states, launch a ballot access program, build out their email list and kick-start another ambitious push to raise $3 million by the end of October.

Amy Klobuchar surpasses second quarter total by $1 million in Q3

Minnesota Sen. Amy Klobuchar raised nearly $5 million in the third quarter -- $4.8 million to be exact, which is roughly $1 million more than her fundraising total from the second quarter, when she raised $3.87 million.

Her campaign says her haul comes from 105,000 donors throughout the three months, and that the average contribution was $29.78.

Klobuchar's campaign noted that she has already "easily surpassed" the Democratic National Committee's donor threshold for the November debate, which stands at 165,000 individual donors, but according to an ABC News analysis, Klobuchar has only earned enough support in one qualifying poll for the November debate. She needs a total of four to make it onto the debate stage.

Beto O'Rourke raises $4.5 million in Q3

Former Rep. Beto O'Rourke of Texas raised $4.5 million in the third quarter, a $1 million increase from his second-quarter sum.

The Texas Democrat, who took a 12-day fundraising hiatus following the mass shooting in his hometown El Paso, trailed behind some mid-tier rivals, including Booker and Klobuchar.

Julian Castro raises $3.5 million in Q3

Former Housing and Urban Development Secretary Julian Castro's campaign on Tuesday reported raising $3.5 million during the third quarter of this year, just a little more than the $2.8 million he raised during the second quarter.

As he battles to receive the polls necessary to make it into the November debate, Castro is left with $672,000 left on hand.

Marianne Williamson doubles her two previous quarters with $3 million haul

In the third quarter, author Marianne Williamson doubled both of her previous fundraising quarters, bringing in $3 million between July and September.

Williamson ends the quarter with $655,276 cash on hand. Her campaign notes that Williamson's total of $6.1 million for the year comes from about 250,000 contributions from 140,000 unique contributors.

Despite her latest haul, which tops Sen. Michael Bennet, Williamson will be on the sidelines for the upcoming debate on Oct. 15, having missed the cut for September. With more stringent qualifications for the winter debates in November and December, Williamson will need to boost her polling in order to qualify.

But her campaign does not appear to be deterred.

"It's the American people who decide which candidates have a voice that needs to be heard, not the gatekeepers," said Patricia Ewing, Williamson's campaign manager.

Rep. Tulsi Gabbard pulls in $3.03 million

Rep. Tulsi Gabbard, D-Hawaii, raised $3.03 million in the third quarter, but flew through the cash she had on hand, spending almost $5.5 million dollars in the third quarter. Gabbard, one of two millennials and the first female combat veteran running for president, is left with just shy of $2.1 million cash on hand.

Gabbard, who failed to qualify for the third Democratic debate, threatened to boycott the fourth debate, saying the DNC and corporate media were "rigging" the election against "the American people" in early voting states. But Gabbard ended up appearing on the stage in Ohio, alongside 11 other candidates.

Steve Bullock brings in $2.3 million, a slight bump from second quarter haul

Montana Gov. Steve Bullock, the only candidate who has won in a state Trump carried in 2016, raised $2.3 million in the third quarter, slightly up from his $2.1 million haul between April and June.

His campaign notes that his individual contributions doubled over the course of the quarter, without listing how many individual donations he received, and 97% of donations were under $200. The average online contribution was $24.

The red-state governor, who has made limiting the influence of money a cornerstone of his campaign, does not appear deterred by his fundraising total, which falls far short of the top-tier candidates.

"Our growing grassroots support helps us build a robust campaign to compete in early states like Iowa and beyond," said Bullock for President campaign manager Jenn Ridder. "... it's clear that Governor Bullock's message of progressive reform is resonating with grassroots supporters across the country. This campaign is built to go the distance, which is why Governor Bullock will continue fighting for his vision of an America where everyone has a fair shot at a better life."

Michael Bennet raises $2.1 million, $700,000 less than Q2

The campaign for Sen. Michael Bennet, D-Colo., announced Wednesday that it had raised $2.1 million between July and September, which is $700,000 less than the just over $2.8 million raised in the second quarter of the year.

In a press release, the campaign said 86% of contributions were $25 of less, and 98% of contributions were $100 or less.

As one of the candidates who did not qualify for the third debate, and also won't qualify for the next debate, according to an ABC News analysis, Bennet campaign spokesperson Shannon Beckham took a swing at the Democratic National Committee (DNC), saying, "Instead of allowing the DNC's flawed debate criteria to dictate this race, we're communicating directly with voters and caucusgoers. They believe in Michael's agenda -- one that will not only unite Democrats, but also win back the nine million Obama-Trump voters we need to defeat Trump and take back the Senate."

Despite having made a seven-figure ad buy in Iowa, the campaign said it still has $1.8 million cash on hand.

Billionaire Tom Steyer brings in $2 million in his first filing quarter

Despite the billions he has in his own bank, progressive activist Tom Steyer raised over $2 million in the third quarter after announcing his bid for president on July 9.

In his first filing quarter, Steyer's total comes from 166,119 donors with an average contribution of a little more than $12.

While Steyer has cleared both thresholds to earn a spot at the upcoming October and November debates, his first reported fundraising haul puts him at the bottom of the Democratic pack, among those who have released their numbers so far.

But his campaign remains optimistic, while noting that Steyer has not held a single fundraiser.

"The campaign's success is directly tied to Tom's experience in creating national grassroots movements," said Campaign Manager Heather Hargreaves. "Tom's late entry into the race meant that we needed to move swiftly to catch up with the other candidates who have been running since last year."

But Steyer has already spent millions to get his message out on the airwaves: in the first month of his campaign, he spent more than $10 million on television and online ads, according to television and online ad data.

Former Rep. John Delaney pulls in nearly $500,000

Former Maryland Rep. John Delaney reported earnings of around $465,000 and loaned himself $400,000. That leaves the attorney with $548,000 left on hand, after spending $7.76 million through the quarter.

Joe Sestak reports less than half a million

Former Pennsylvania Democratic Rep. Joe Sestak brought in just under $375,000 in the third quarter, and ended September with around $200,000 in cash on hand.

Florida Mayor Wayne Messam raised $5

Democratic Mayor of Miramar, Florida, Mayor Wayne Messam had a slow quarter, reporting $5 raised and no money spent. He ended the month with just over $31,000 on hand.

ABC News' John Vehovek, Cheyenne Haslett, Adam Kelsey, Zohreen Shah, Justin Gomez, Quinn Scanlan, Armando Garcia, Rachel Scott and Will Steakin contributed to this report.