The Democratic Congressional Campaign Committee has raised a record amount of money for the month of May, according to fundraising figures provided exclusively to Roll Call.

The campaign arm for House Democrats raised more than $9.3 million last month, with more than two-thirds of the funds raised through grassroots online, phone and mail donations. The boost in funds comes after the House passed the GOP health care bill, and amid a closely watched special election in Georgia’s 6th District.

“The huge enthusiasm gap between Democrats and Republicans has shown up in special elections, primaries, and with record-breaking small-dollar fundraising,” DCCC spokesman Tyler Law said in a statement. “Democrats are unified heading into the 2018 midterms, and we will continue to channel grassroots energy towards flipping seats on the largest House battleground we’ve seen in a decade.”

According to the fundraising figures, the DCCC raised $6.55 million through its grassroots programs, with $4.5 million coming from online donations, with an average donation of $19.

The amount raised through those programs appears to have surpassed the National Republican Congressional Committee’s total reported fundraising. The Washington Examiner reported the NRCC raised $6.5 million total during May, its best haul for May since 2005.