Obama Hits Trail For Dems in Tight Races, Halloween Terror Plot, Another UK Stabbing: AM Update 11/3

It's Election Eve, with key races for governor in New Jersey and Virginia, as former President Barack Obama hits the trail to take aim at President Trump. A new poll signals bad news for the Democratic brand. The FBI announces they foiled an alleged Halloween terror attack out of Michigan. The U.K. faces yet another horrific stabbing attack.