HOUSTON, Texas: Vice President Kamala Harris launched her presidential campaign before the largest US teachers union on Thursday, vowing to “fight for the future” as new polls showed her narrowing the gap with Republican rival Donald Trump. Harris's rapid emergence as the successor to President Joe Biden, 81, as the Democratic presidential nominee in the Nov. 5 election shook up a stagnant presidential race, with polls showing her lead over former President Trump narrowing.
