Republican presidential candidate and former U.S. Ambassador to the United Nations Nikki Haley speaks at a campaign town hall in Hampton, New Hampshire, U.S., September 21, 2023. REUTERS/Brian Snyder/File Photo Acquire Licensing Rights WASHINGTON, Sept 26 (Reuters) - Republican presidential contender Nikki Haley, the former U.S. ambassador to the United Nations, has received a bump in opinion polls since a well-received debate performance in late August, though she remains in the single digits nationally. She stands out on the campaign trail for talking frequently about foreign policy issues, and she is the highest-polling Republican who supports further involvement in the...