US election: Day four of the Democratic convention

A photographer sets up next to the stage in preparation for the final day Photograph: Paul Sancya/AP

Michelle Obama walks through the crowd at Invesco Field ahead of the final day's festivities Photograph: Matt Sayles/AP

An attendee waves a US flag at the top of the Invesco Field stadium Photograph: Shannon Stapleton/Reuters

A man wears a T-shirt commemorating Barack Obama’'s historic campaign Photograph: Spencer Platt/Getty

Sheryl Crow performs on the final day Photograph: Joe Mahoney/AP

Jack Shifrel of Coconut Creek, Florida, shows off his political spirit Photograph: LARRY DOWNING/Reuters

Musicians will.i.am. (left) and John Legend perform Yes We Can Photograph: AP

People wave flags in support Photograph: Jim Young/Reuters

Convention-goers give away condoms outside the open-air Invesco Field Photograph: Robyn Beck/AFP

Olympic gold medallist gymnast Shawn Johnson leads the pledge of allegiance Photograph: Jae C. Hong/AP

Wan Ali shows off his Obama shoes Photograph: Matt Rourke/AP

Actresses Rosario Dawson (left) and Kerry Washington pose together Photograph: AP

Jennifer Hudson sings the national anthem Photograph: Doug Pensinger/Getty

Former US vice-president Al Gore reacts to the crowd Photograph: John Moore/Getty

Barack Obama greets delegates before he accepts the Democratic presidential nomination Photograph: Chuck Kennedy/Getty

Barack Obama is shown speaking on a screen during his acceptance speech Photograph: Mark Wilson/Getty

Michelle Obama, centre, sits with her daughters Malia, left, and Sasha, as their father gives his acceptance speech. To the right of Michelle sits Democratic vice-presidential nominee, Joe Biden, and his wife, Jill Photograph: Joe Amon/AP

Barack Obama addresses the audience Photograph: Paul J Richards/AFP

Supporters hold signs Photograph: Larry Rubenstein/Reuters

Barack Obama and Joe Biden walk on stage with their wives Photograph: Rick Wilking/Reuters

Joe Biden cheers as he stands with his wife, Jill, and Michelle Obama Photograph: Mike Segar/Reuters

A Mississippi delegate cries after Obama's acceptance speech Photograph: Jim Young/Reuters

Barack Obama hugs his wife, Michelle, after giving his acceptance speech Photograph: Alex Brandon/AP

Confetti falls as Obama and Biden make their goodbyes Photograph: Brian Snyder /Reuters

A view from the 50th floor of the Quest building in downtown Denver shows fireworks shooting from Mile High stadium at the end of Obama's acceptance speech Photograph: Bill Ross/AP