- Keir Starmer is poised to become the UK's next prime minister.
- He's had help opening up about his personal story from an unlikely source: Barack Obama.
- Exit polls suggest Starmer's party winning with an estimated overall majority of 170 seats.
Britons have voted and counting is underway as the UK gears up for a radical change in leadership.
Observers are expecting a landslide win for the left-wing Labour Party, which would make its leader, Keir Starmer, prime minister and end 14 years of Conservative Party rule.