Vice President Kamala Harris is narrowly beating rival Donald Trump in a national presidential poll released Tuesday. It is one of the first conducted since US President Joe Biden ended his re-election campaign. Harris holds a two-point lead over Trump, 44 percent to 42 percent, according to the Reuters/Ipsos poll. It was conducted two days after Biden announced on Sunday that he was dropping out of the race and endorsing his vice president. In the previous week’s poll, Harris, 59, and Trump, now the elder in the presidential race at 78, were tied at 44 percent. Harris, the overwhelming frontr…