Washington (CNN) - As this year's battle for control of the Senate heats up, the National Republican Senatorial Campaign says it now has just over $15 million dollars in its warchest.
The NRSC also reported Wednesday that it raised $5.14 million last month, and is carrying no debt. In a release, the NRSC points out that the money raised in March is 25 percent higher than in 2008, when the GOP had 8 more members in the Senate.
The NRSC's March haul is higher than the $4.6 million it brought in during February and the $5.01 it raised in January.
"We have successfully added more than 240,000 first-time supporters to the NRSC donor rolls and increased our fundraising by nearly 25 percent more than last cycle. We deeply appreciate this growing support and are committed to doing everything possible to helping our Senate Republican candidates win in November," says NRSC Executive Director Rob Jesmer.
The Democratic Senatorial Campaign Committee has not released its March figures yet. The DSCC raised $4 million in February and had $14.3 million cash on hand with $416,000 in debt as of March 1.
The Democrats and Republicans are each defending 18 Senate seats this November. The Democrats currently hold a 59 to 41 advantage in the chamber, thanks to the support of independent Sens. Joe Lieberman of Connecticut and Bernie Saunders of Vermont, who caucus with the Democrats.