"We've made it clear we're not doing business with these guys anymore," RNC spokesman Sean Spicer told NBC's Michael Isikoff. "We've come out pretty strong against this kind of stuff — and we have zero tolerance for this."
The firm, NBC reports, is run by GOP consultant Nathan Sproul, who has not responded to TPM's requests for comment. Sproul's other firm, Lincoln Strategy Group, has been paid by Mitt Romney's presidential campaign.
The RNC, which did not immediately respond to TPM's request for comment, paid the firm to register GOP voters in Nevada. In four other states — Florida, North Carolina, Colorado and Virginia — state parties paid the company and were reimbursed by the RNC.