The Republican National Committee (RNC) outraised the Democratic National Committee (DNC) by more than $6 million last month, according to federal filings.
Recently released numbers show the DNC raised around $4 million during the month of September, while the RNC raised about $10 million.
The data also showed that the RNC has roughly $44 million in cash on hand, while the DNC has roughly $7 million.
The RNC reports having no debt, while the DNC has $3.7 million in debt.
The numbers show an expanding money gap between the national party committees, with the RNC raising more than $104 million so far this year while the DNC has raised a little over $51 million.
Democrats have grown frustrated at the committee's slow fundraising pace, despite the Trump administration and the Republican-led Congress facing dismal approval ratings.
Both parties are ratcheting up fundraising efforts ahead of the 2018 midterm elections.