Former President Barack Obama will hit the campaign trail for Vice President Kamala Harris next week, kicking off a blitz of the battleground states in the Pittsburgh area on Thursday, a senior campaign official confirmed.
The two have been friends for more than 20 years. Harris was an early supporter of Obama’s 2008 presidential campaign, at a time when much of the Democratic Party had coalesced behind Hillary Clinton, who was making her first run for the Oval Office. Harris traveled...