The Democratic Senatorial Campaign Committee outraised its Republican counterpart by just over $1 million in the month of May, bringing in $4.9 million to the National Republican Senatorial Committee's $3.6 million, according to committee sources.
The DSCC has outperformed the NRSC in terms of fundraising nearly every month this year, aside from April, when the NRSC raised slightly more.
Democratic fundraising numbers were boosted by help from President Obama, who has headlined a number of DSCC fundraisers throughout the first half of the year, including a handful in May.
The DSCC wouldn't say how much it had spent in the last month — or how much debt it was carrying. As of the end of April, the organization had $8.6 million in the bank and $13.8 million in debt.
The organization has spent at least $700,000 in the past month to help Rep. Edward MarkeyEd MarkeyDems: Keep gun research ban out of spending bills Overnight Tech: Groups grade Clinton tech agenda | Facebook activates safety check in Istanbul | Another holdup for location data bill Overnight Cybersecurity: US sees drop in Chinese cyberattacks MORE's (D-Mass.) Senate campaign.
The NRSC reported $8 million in debt, indicating they've paid down $1.5 million since the last report.
NRSC Communications Director Brad Dayspring said Republicans believe consistent debt plaguing the DSCC is an indication the GOP is in a better financial position going forward.
"Our goal has been to keep showing steady progress each month, raising the resources needed to send Chuck SchumerCharles SchumerFormer Gillibrand aide wins NY House primary Senate faces critical vote on Puerto Rico Juan Williams: GOP sounds the sirens over Trump MORE and LINO [Leader in Name Only] Harry ReidHarry ReidOvernight Finance: Obama signs Puerto Rico bill | Trump steps up attacks on trade | Dodd-Frank backers cheer 'too big to fail' decision | New pressure to fill Ex-Im board Iowa poll: Clinton up 14 on Trump, Grassley in tight race with Dem Lynch meeting with Bill Clinton creates firestorm for email case MORE back the minority. Another month of 'progress NRSC,' " he said.