Hillary Clinton meets early voters at a polling site on Thursday in Greensboro, N.C. (Melina Mara/The Washington Post)

Hillary Clinton’s already-robust fundraising ratcheted up even more this month, helping her campaign and two joint fundraising committees pull in $101 million in the first 19 days of October, according to new campaign finance reports filed Thursday with the Federal Election Commission.

That’s an average haul of $5.3 million a day, up from $5.1 million a day in September. More than $57 million was donated directly for Clinton's campaign committee.

At the same time, the Democratic presidential nominee shelled out $54 million, a slower spending rate than the previous month. More than half the money — $33 million — went to run television and online ads.

That gave Clinton a hefty stockpile of cash as she headed into the final weeks of the campaign, with more than $153 million in the bank. And more money is coming in, as surrogates, including her husband and daughter, headline dozens of fundraisers in the coming week.

As of Thursday evening, Republican nominee Donald Trump and his affiliated committees had not filed their October reports, which are due by midnight to the FEC.

Clinton's early pursuit of big-dollar donations for the Democratic Party — which began in the fall of 2015 — helped her raise $320 million in all for the Democratic National Committee and state parties, according to figures released by her campaign. Her campaign committee collected another $555 million through Oct. 19, meaning she is unlikely to match the $731 million that President Obama raised for his reelection committee.

But thanks to Clinton's embrace of big-money super PACs, she pulled in $1.2 billion in conjunction with the party and her outside allies, matching the total financial arsenal arrayed for Obama four years ago.

Priorities USA Action, the top Clinton super PAC, reported bringing in $18 million in the first 19 days of October. The group has pulled in nearly $175 million in all, making it the most financially successful super PAC since the groups first came on the scene in 2010.

Nine mega-donors gave Priorities $1 million or more this month, including hedge fund manager James Simons and his wife, Marilyn ($3 million); Susan Mandel, wife of hedge fund executive Stephen Mandel ($2.5 million); Facebook co-founder Dustin Moskovitz ($2.5 million); and Chicago news executive Fred Eychaner ($2 million).