Nearly all — 98 percent — of the RNC's donations in the first quarter came in sums of less than $200, and more than 250,000 individuals contributed to the committee.
Priebus said that the RNC had 20 percent more first-time donors than during the same period at this point last cycle.
“These numbers show there’s great enthusiasm among Republicans to grow our ranks, welcome new voters, and build our party,” he said in a statement.
The GOP has been in the process of recalibrating following difficult losses in 2012, and last month the party issued a report, called the Growth and Opportunity Project, that included recommendations for Republicans going forward to broaden the party's appeal to diverse constituencies.
Priebus said the committee's first-quarter fundraising haul was an indication that Republicans are supportive of that effort.
“The RNC has already begun building an unprecedented community-based field operation to lay the foundation for victories in 2013, 2014, 2016 and beyond. As we work to implement recommendations from the Growth and Opportunity Project and chart a new path forward, we’re grateful that so many Republicans — grassroots supporters and major donors alike — are excited about making critical investments in technology, minority engagement, and the other areas necessary to grow and win," he said.