Former President Donald Trump beats President Joe Biden by six points in a hypothetical head-to-head matchup and dominates the Republican primary field in the latest national Harvard/Harris poll. The poll, which was conducted following Trump’s arraignment on Tuesday on a 37-count federal indictment, shows that 45 percent of registered voters would back him over Biden, who draws 39 percent of support. Another 15 percent are undecided:🚨 NATIONAL POLL: Harvard/Harris PRES: (R) Trump: 45% (+6)(D) Biden: 39%(R) DeSantis: 41% (+1)(D) Biden: 40%.GOP PRES: • Trump — 59% (+45)• DeSantis — 14% • Pence — 8%• Haley — 4%• Ramaswamy — 3%•...