(CNN) - Top fundraisers for Republican Newt Gingrich's presidential campaign resigned Tuesday, the campaign confirmed to CNN.
Fundraising director Jody Thomas and fundraising consultant Mary Heitman left the team. The two defections follow 16 resignations earlier in the month when top aides stepped down over disagreements with the former House Speaker.
Gingrich press secretary RC Hammond said the campaign will continue.
"Newt 2012 continues its reorganization to achieve a grassroots driven substantive solutions orientated campaign," Hammond told CNN. "We wish the members of the finance team who decided to leave the best. The campaign continues forward as committed as ever."
- CNN's Paul Steinhauser and Gabriella Schwarz contributed to this report