The Democratic Senatorial Campaign Committee announced Thursday that it had raised a record $17.7 million in its first quarter.

"We have just concluded the most successful first quarter in the history of the committee and most of our candidates just broke records of their own," said DSCC Executive Director Guy Cecil. "We have spent the cycle aggressively recruiting great candidates in open and Republican-held seats, our incumbents are building well-funded campaigns, and now donors are more enthusiastic than ever about the likelihood we will keep the majority."

The DSCC said it now has nearly $24 million on hand.

That gives the group a financial edge over its Republican counterpart, the National Republican Senatorial Committee, which raised $14.9 million in the first quarter and had $19.6 million on hand at the end of March, according to the Wall Street Journal.

NRSC spokesman Brian Walsh told the Journal he wasn't worried.

"Their financial advantage from last cycle didn’t prevent them from losing seats,” he said.