If Christie dropped out of the race, he could help Haley’s campaign by drawing some of his supporters over to her side. He could also provide her with his endorsement, which would give her additional credibility within the Republican Party. In addition, Christie could use his resources and networks to help Haley to fundraise and finance her campaign, as well as provide her with valuable advice and contacts. Lastly, he could serve as a surrogate on the campaign trail and in the media to boost Haley’s public profile.