Ms. Haley has cut into former President Donald J. Trump’s lead in the state where Mr. Christie had spent significant time wooing voters opposed to Mr. Trump.
In previously undisclosed appearances, the justice spoke to attendees at two annual meetings for conservative donors and strategists organized by the Koch network.
Americans for Prosperity Action is wading into a Republican presidential primary for the first time, and waiting to see which candidate it will get behind for 2024.