SIOUX CITY, Iowa ? South Carolina Gov. Nikki Haley plans to endorse Mitt Romney's presidential bid.
A Republican with knowledge of the endorsement disclosed the plan ahead of the official announcement on condition of anonymity.
Haley is a rising star within the GOP and her endorsement in the first-in-the South primary state has been sought by many other presidential contenders.
Romney plans to fly to South Carolina on Friday afternoon.
Politico first reported the Haley endorsement.