Kamala Harris has enjoyed three weeks of astonishing momentum by capturing the “hope” represented by Barack Obama’s presidential campaign while copying the “basement” strategy of Joe Biden. Starting tonight at a rally in Philadelphia, she is embarking on a whistle-stop tour of six swing states designed to fire up enthusiasm for her candidacy, while leaving little opportunity for the face-to-face interviews and media scrutiny that could create gaffes that Donald Trump can exploit.
