WASHINGTON (AP) — Vice President Kamala Harris is being thrust into the most scrutinizing of spotlights, suddenly the leading candidate to succeed President Joe Biden as the presumptive Democratic presidential nominee and her party’s main hope of defeating Republican Donald Trump. She spoke multiple times with Biden on Sunday, according to people familiar with the conversations – a day after Biden huddled with his closest aides in Rehoboth Beach, Delaware, as he began to conclude that he would end his reelection bid. About two hours after the surprise Sunday announcement from Biden, Harris rel…