The former US president will campaign for Kamala Harris, starting in the crucial battleground state Pennsylvania that could decide the election

Former president Barack Obama will crisscross the battleground states for Kamala Harris, with a kickoff in all-important Pennsylvania next week, according to a senior Harris campaign official.

Obama will hold his first event in Pittsburgh, Pennsylvania next Thursday, the beginning of a blitz across the handful of rust belt and sun belt states that will probably decide the 2024 election.