New Hampshire Governor Chris Sununu endorses Nikki Haley for the 2024 Republican presidential nomination, potentially giving her a boost in the early primary state. Sununu's endorsement adds to Haley's support from the Republican establishment, following an endorsement by the conservative US political network led by Charles Koch. Despite these endorsements, Donald Trump remains dominant in the 2024 Republican presidential race, with the support of over half of the party's voters, according to a recent poll.