Kamala Harris has made major gains in critical Sun Belt swing states, leads in Arizona and North Carolina: poll Business InsiderKamala Harris Puts Four Sun Belt States Back in Play, Times/Siena Polls Find The New York TimesHarris, Trump neck and neck in 4 critical swing states: Survey The HillThe Fight To Redefine the 2024 Race for President The Cook Political ReportPennsylvania 2024 Poll: Trump 49%, Harris 48% Emerson Polling