South Carolina Gov. Nikki Haley confirmed Wednesday that she will endorse a candidate for the Republican presidential nomination ahead of the primaries beginning in January.

She said at a press conference during the annual meeting and elections for the Republican Governors Association that she would "absolutely" endorse before the Iowa caucuses on Jan. 3, according to multiple reports.

Haley is a rising star in the Republican party and governor of a key, early-voting state. Her endorsement could mean a huge boost for a candidate, particularly in a cycle where many high-profile GOP names have declined to endorse.

One key issue for Haley will likely be that of labor unions. Her state has undergone a protracted battle with the National Labor Relations Board over a Boeing expansion plant, and Haley has called on the GOP presidential candidates to make their positions clear on the issue.