Republican presumptive presidential nominee Mitt Romney attends a fundraiser at Woodfield Country Club in Boca Raton, Florida on Friday, May 17, 2012.
(CNN) -- The Republican National Committee brought in $34 million last month, marking the best May in the RNC's history, according to an official with the group.
In total, the RNC has raised $81.3 million in 2012. The group said Wednesday they surpassed their entire 2011 fund-raising figure in mid-June.
Wednesday's numbers represent a spike for the group, which began a joint fund-raising effort with Mitt Romney in April when it became clear the former Massachusetts governor would become the presumptive GOP nominee. Filings with the Federal Election Commission indicate the Romney Victory fund transferred nearly $26 million to the RNC in May.
The Democratic National Committee brought in almost $20 million in May, according to their FEC report. That included more than $13 million that was transferred from the Obama Victory fund.
In total, Romney for President, Romney Victory, and the Republican National Committee brought in just under $77 million in May, according to Romney's campaign, topping their Democratic rivals by more than $10 million.
When added together, President Barack Obama's re-election campaign, along with the Obama Victory Fund, reported raising $63.6 million last month. The money is divided between the re-election campaign, the Democratic National Committee and affiliated Democratic state parties.
The RNC said Wednesday they had $60.8 cash on hand, compared to just under $30 million in the bank for the DNC.